

                                       UNITED STATES
                            SECURITIES AND EXCHANGE COMMISSION
                                 Washington, D.C. 20549

                                         FORM 8-K

                                     CURRENT REPORT
      Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

              Date of Report (Date of earliest event reported): December 27, 2004
                           (Date of earliest event reported)

         Ameriquest Mortgage Securities Inc (as Depositor under the Trust
         Agreement, dated as September 1, 2004, providing for the issuance of
               Asset-Backed Pass-Through Certificates, Series 2004-IA1)
                 (Exact name of registrant as specified in charter)

                                       DELAWARE
                     (State or Other Jurisdiction of Incorporation)

               333-118137-02                          33-0885129
          (Commission File Number)        (I.R.S. Employer Identification No.)


          1100 TOWN & COUNTRY ROAD, SUITE 1100
          ORANGE, CALIFORNIA                              92868
          (Address of principal executive offices)     (Zip Code)


          Registrant's Telephone Number, Including Area Code:  (714) 564-0660

            (Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any
of the following provisions (see General Instruction A.2. below):

[  ] Written communications pursuant to Rule 425 under the Securities Act
(17 CFR 230.425)

[  ] Soliciting material pursuant to Rule 14a-12(b) under the Exchange Act
(17 CFR 240.14a-12(b))

[  ] Pre-commencement communications pursuant to Rule 14d-2(b) under the
Exchange Act (17 CFR 240.14d-2(b))

[  ] Pre-commencement communications pursuant to Rule 13e-4(c) under the
Exchange Act (17 CFR 240.13e-4(c))


     Item 8.01  Other Events

     Attached hereto is a copy of the Monthly Remittance Statements to the
     Certificateholders which was derived from the monthly information
     submitted by the Master Servicer of the Trust to the Trustee.


     Item 9.01 Financial Statements and Exhibits

     (c) Exhibits:

     Exhibit No. Description

     99.1 Monthly Remittance Statement to the Certificateholders dated as of
     December 27, 2004.

                                    Signatures

               Pursuant to the requirements of the Securities Exchange Act of
          1934, the Registrant has duly caused this report to be signed on its
          behalf by the undersigned, hereunto duly authorized.


                                  Deutsche Bank National Trust Company,
                                  in its capacity as Trustee under the
                                  Pooling and Servicing Agreement on
                                  behalf of Ameriquest Mortgage
                                  Securities Inc.,Registrant


          Date:  Dec 28, 2004               By:  /s/  Katherine M. Wannenmacher
                                            Katherine M. Wannenmacher
                                            Vice President


                                   EXHIBIT INDEX

          DOCUMENT

          99.1 Monthly Remittance Statement to the Certificateholders
          dated as of December 27, 2004.



Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution

				External Parties					Table of Contents

												Page
				Seller								Page
				Seller					1. Certificate Payment Report					2
				Ameriquest Mortgage Corp					1. Certificate Payment Report					2
				Ameriquest Mortgage Corp					2. Collection Account Report					4
									2. Collection Account Report					4
									3. Credit Enhancement Report					6
									4. Collateral Report					7
				Certificate Insurer(s)					5. Delinquency Report					10
				Certificate Insurer(s)					5. Delinquency Report					10
									6. REO Report					11

									7. Foreclosure Report					12
									8. Prepayment Report					13
									9. Prepayment Detail Report					16
									9. Prepayment Detail Report					16
									10. Realized Loss Report					17
									11. Realized Loss Detail Report					20
				Servicer(s)					11. Realized Loss Detail Report					20
				Servicer(s)					12. Triggers and Adj. Cert. Report					21
				Ameriquest Mortgage Corp					12. Triggers and Adj. Cert. Report					21
				Ameriquest Mortgage Corp					13. Additional Certificate Report					22
									13. Additional Certificate Report					22


				Underwriter(s)
				Greenwich Capital Markets


									Total Number of Pages					22
									Total Number of Pages

				Dates					Contacts

				Cut-Off Date:		September 01, 2004			Hang Luu
				Close Date:		September 20, 2004			Administrator
				First Distribution Date:		October 25, 2004			(714) 247-6000
									hang-thai.luu@db.com
									hang-thai.luu@db.com
									Address:
									1761 East St. Andrew Place, Santa Ana, CA 92705
				Distribution Date:		December 27, 2004
									Factor Information:			(800) 735-7777
				Record Date:		November 30, 2004			Factor Information:			(800) 735-7777
									Main Phone Number:			(714) 247-6000

						December 24, 2004
						December 24, 2004

									https://www.tss.db.com/invr






Page 1 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution
Certificate Payment Report
Current Period Distribution - REMIC II
					Prior											Current
	Class		Original		Principal					Total		Realized		Deferred		Principal
	Class		Original		Principal					Total		Realized		Deferred		Principal
Class	Type	Cur	Face Value		Balance	Interest		Principal		Distribution		Loss		Interest		Balance


					(1)	(2)		(3)		(4)=(2)+(3)		(5)		(6)		(7)=(1)-(3)-(5)+(6)

A-1		$	141,400,000.00		131,339,681.65	274,828.28		6,375,837.93		6,650,666.21		0.00		0.00		124,963,843.72
A-1		$	141,400,000.00		131,339,681.65	274,828.28		6,375,837.93		6,650,666.21		0.00		0.00		124,963,843.72
A-2		$	57,400,000.00		57,400,000.00	128,017.94		0.00		128,017.94		0.00		0.00		57,400,000.00
A-3		$	51,705,000.00		51,705,000.00	126,002.21		0.00		126,002.21		0.00		0.00		51,705,000.00
M-1		$	11,250,000.00		11,250,000.00	28,868.75		0.00		28,868.75		0.00		0.00		11,250,000.00
M-2		$	10,650,000.00		10,650,000.00	28,246.17		0.00		28,246.17		0.00		0.00		10,650,000.00
M-3		$	3,300,000.00		3,300,000.00	9,178.58		0.00		9,178.58		0.00		0.00		3,300,000.00
M-4		$	6,900,000.00		6,900,000.00	21,865.33		0.00		21,865.33		0.00		0.00		6,900,000.00
M-5		$	2,850,000.00		2,850,000.00	9,644.88		0.00		9,644.88		0.00		0.00		2,850,000.00
M-6		$	2,700,000.00		2,700,000.00	10,230.00		0.00		10,230.00		0.00		0.00		2,700,000.00
M-7		$	2,100,000.00		2,100,000.00	10,271.33		0.00		10,271.33		0.00		0.00		2,100,000.00
M-8		$	3,150,000.00		3,150,000.00	15,407.00		0.00		15,407.00		0.00		0.00		3,150,000.00
M-9		$	2,250,000.00		2,250,000.00	9,067.50		0.00		9,067.50		0.00		0.00		2,250,000.00
CE		$	4,350,232.11		4,350,077.32	912,534.35		0.00		912,534.36		0.00		0.00		4,350,077.32
P		$	100.00		100.00	85,437.78		0.00		85,437.78		0.00		0.00		100.00
R		$	0.00		0.00	0.00		0.00		0.00		0.00		0.00		0.00


Total			300,005,332.11		289,944,858.97	1,669,600.10		6,375,837.93		8,045,438.04		0.00		0.00		283,569,021.04
Total




Interest Accrual Detail Current Period Factor Information per $1,000 of Original Face-
								Orig. Principal		Prior							Current
								Orig. Principal		Prior							Current
	Period		Period					(with Notional)		Principal						Total	Principal
	Period		Period
Class	Starting		Ending		Method	Cusip		Balance		Balance		Interest		Principal		Distribution	Balance

								(1)		(1)		(2)		(3)		(4)=(2)+(3)	(5)
A-1	11/26/04		12/26/04		A-Act/360	03072SUY9		141,400,000.00		928.852063		1.943623		45.090792		47.034414	883.761271
A-2	11/26/04		12/26/04		A-Act/360	03072SUZ6		57,400,000.00		1,000.000000		2.230278		0.000000		2.230278	1,000.000000
A-3	11/26/04		12/26/04		A-Act/360	03072SVA0		51,705,000.00		1,000.000000		2.436944		0.000000		2.436944	1,000.000000
M-1	11/26/04		12/26/04		A-Act/360	03072SVB8		11,250,000.00		1,000.000000		2.566111		0.000000		2.566111	1,000.000000
M-2	11/26/04		12/26/04		A-Act/360	03072SVC6		10,650,000.00		1,000.000000		2.652223		0.000000		2.652223	1,000.000000
M-3	11/26/04		12/26/04		A-Act/360	03072SVD4		3,300,000.00		1,000.000000		2.781388		0.000000		2.781388	1,000.000000
M-4	11/26/04		12/26/04		A-Act/360	03072SVE2		6,900,000.00		1,000.000000		3.168888		0.000000		3.168888	1,000.000000
M-5	11/26/04		12/26/04		A-Act/360	03072SVF9		2,850,000.00		1,000.000000		3.384168		0.000000		3.384168	1,000.000000
M-6	11/26/04		12/26/04		A-Act/360	03072SVG7		2,700,000.00		1,000.000000		3.788889		0.000000		3.788889	1,000.000000
M-7	11/26/04		12/26/04		A-Act/360	03072SVH5		2,100,000.00		1,000.000000		4.891110		0.000000		4.891110	1,000.000000
M-8	11/26/04		12/26/04		A-Act/360	03072SVJ1		3,150,000.00		1,000.000000		4.891111		0.000000		4.891111	1,000.000000
M-9	11/26/04		12/26/04		A-Act/360	03072SVK8		2,250,000.00		1,000.000000		4.030000		0.000000		4.030000	1,000.000000
CE	11/01/04		11/30/04		F-30/360			300,005,332.11		14.500000		3.041727		0.000000		3.041727	14.500000
P	11/01/04		11/30/04		A-30/360			100.00		1,000.000000		854,377.800000		0.000000		854,377.800000	1,000.000000
R	11/01/04		11/30/04		A-30/360			0.00		0.000000		0.000000		0.000000		0.000000	0.000000




Page 2 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution

Distribution to Date - REMIC II
																Current


	Original				Unscheduled	Scheduled		Total		Total		Realized		Deferred		Principal

Class	Face Value		Interest		Principal	Principal		Principal		Distribution		Loss		Interest		Balance
	(1)		(2)		(3)	(4)		(5)=(3)+(4)		(6)=(2)+(5)		(7)		(8)		(9)=(1)-(5)-(7)+(8)
A-1	141,400,000.00		824,689.19		15,609,720.31	826,435.96		16,436,156.28		17,260,845.47		0.00		0.00		124,963,843.72
A-2	57,400,000.00		371,495.59		0.00	0.00		0.00		371,495.59		0.00		0.00		57,400,000.00
A-3	51,705,000.00		368,417.87		0.00	0.00		0.00		368,417.87		0.00		0.00		51,705,000.00
M-1	11,250,000.00		84,754.30		0.00	0.00		0.00		84,754.30		0.00		0.00		11,250,000.00
M-2	10,650,000.00		83,133.23		0.00	0.00		0.00		83,133.23		0.00		0.00		10,650,000.00
M-3	3,300,000.00		27,107.09		0.00	0.00		0.00		27,107.09		0.00		0.00		3,300,000.00
M-4	6,900,000.00		65,130.97		0.00	0.00		0.00		65,130.97		0.00		0.00		6,900,000.00
M-5	2,850,000.00		28,841.51		0.00	0.00		0.00		28,841.51		0.00		0.00		2,850,000.00
M-6	2,700,000.00		30,778.03		0.00	0.00		0.00		30,778.03		0.00		0.00		2,700,000.00
M-7	2,100,000.00		31,255.80		0.00	0.00		0.00		31,255.80		0.00		0.00		2,100,000.00
M-8	3,150,000.00		46,883.70		0.00	0.00		0.00		46,883.70		0.00		0.00		3,150,000.00
M-9	2,250,000.00		27,363.36		0.00	0.00		0.00		27,363.36		0.00		0.00		2,250,000.00
CE	4,350,232.11		2,856,874.35		0.00	0.00		154.79		2,857,029.15		0.00		0.00		4,350,077.32
P	100.00		204,287.99		0.00	0.00		0.00		204,287.99		0.00		0.00		100.00
R	0.00		0.00		0.00	0.00		0.00		0.00		0.00		0.00		0.00


Total	300,005,332.11		5,051,012.98		15,609,720.31	826,435.96		16,436,311.07		21,487,324.06		0.00		0.00		283,569,021.04


Interest Detail - REMIC II
	Pass		Prior Principal			Non-		Prior		Unscheduled				Paid or		Current
	Pass		Prior Principal			Non-		Prior		Unscheduled				Paid or

	Through		(with Notional)		Accrued	Supported		Unpaid		Interest		Optimal		Deferred		Unpaid

Class	Rate		Balance		Interest	Interest SF		Interest		Adjustment		Interest		Interest		Interest
					(1)	(2)		(3)		(4)		(5)=(1)-(2)+(3)+(4)		(6)		(7)=(5)-(6)
A-1	2.43000%		131,339,681.65		274,828.28	0.00		0.00		0.00		274,828.28		274,828.28		0.00
A-2	2.59000%		57,400,000.00		128,017.94	0.00		0.00		0.00		128,017.94		128,017.94		0.00
A-3	2.83000%		51,705,000.00		126,002.21	0.00		0.00		0.00		126,002.21		126,002.21		0.00
M-1	2.98000%		11,250,000.00		28,868.75	0.00		0.00		0.00		28,868.75		28,868.75		0.00
M-2	3.08000%		10,650,000.00		28,246.17	0.00		0.00		0.00		28,246.17		28,246.17		0.00
M-3	3.23000%		3,300,000.00		9,178.58	0.00		0.00		0.00		9,178.58		9,178.58		0.00
M-4	3.68000%		6,900,000.00		21,865.33	0.00		0.00		0.00		21,865.33		21,865.33		0.00
M-5	3.93000%		2,850,000.00		9,644.88	0.00		0.00		0.00		9,644.88		9,644.88		0.00
M-6	4.40000%		2,700,000.00		10,230.00	0.00		0.00		0.00		10,230.00		10,230.00		0.00
M-7	5.68000%		2,100,000.00		10,271.33	0.00		0.00		0.00		10,271.33		10,271.33		0.00
M-8	5.68000%		3,150,000.00		15,407.00	0.00		0.00		0.00		15,407.00		15,407.00		0.00
M-9	4.68000%		2,250,000.00		9,067.50	0.00		0.00		0.00		9,067.50		9,067.50		0.00
CE	251.72914%		4,350,077.32		0.00	0.00		0.00		0.00		0.00		912,534.35		0.00
P	0.00000%		100.00		0.00	0.00		0.00		0.00		0.00		85,437.78		0.00
R	0.00000%		0.00		0.00	0.00		0.00		0.00		0.00		0.00		0.00


Total			289,944,858.97		671,627.97	0.00		0.00		0.00		671,627.97		1,669,600.10		0.00



Page 3 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution
Collection Account Report
SUMMARY
SUMMARY
													Total
Principal Collections													6,375,837.93
Principal Withdrawals													0.00
Principal Other Accounts													0.00
TOTAL NET PRINCIPAL													6,375,837.93
Interest Collections													1,609,692.23
Interest Withdrawals													-0.00
Interest Fees													-25,529.90
Interest Other Accounts													85,437.78
TOTAL NET INTEREST													1,669,600.12
TOTAL AVAILABLE FUNDS FOR DISTRIBUTION													8,045,438.05



PRINCIPAL - COLLECTIONS
PRINCIPAL - COLLECTIONS
														Total
Scheduled Principal Received														272,042.45
Curtailments														19,152.46
Prepayments In Full														6,084,643.02
Repurchased/Substitutions														0.00
Liquidations														0.00
Insurance Principal														0.00
Other Additional Principal														0.00
Delinquent Principal														-218,230.11
Realized Losses														-0.00
Advanced Principal														218,230.11
TOTAL PRINCIPAL COLLECTED														6,375,837.93


PRINCIPAL - WITHDRAWALS

SPACE INTENTIONALLY LEFT BLANK



PRINCIPAL - OTHER ACCOUNTS
PRINCIPAL - OTHER ACCOUNTS
													Total
TOTAL PRINCIPAL OTHER ACCOUNTS													0.00





Page 4 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution

INTEREST - COLLECTIONS
INTEREST - COLLECTIONS
													Total
Scheduled Interest													1,707,002.31
Repurchased/Substitution Interest													0.00
Liquidation Interest													0.00
Insurance Interest													0.00
Other Additional Interest													0.00
Prepayment Interest Shortfalls													-0.00
Delinquent Interest													-1,374,155.67
Compensating Interest													0.00
Civil Relief Act Shortfalls													-0.00
Interest Advanced													1,276,845.59
TOTAL INTEREST COLLECTED													1,609,692.23


INTEREST - WITHDRAWALS
INTEREST - WITHDRAWALS
													Total
Non-Recoverable Advances													0.00
Reimbursements to Master Servicer													0.00
TOTAL INTEREST WITHDRAWALS													0.00



INTEREST - OTHER ACCOUNTS
INTEREST - OTHER ACCOUNTS
													Total
Prepayment Charges													85,437.78
Net WAC Investment Income													0.00
TOTAL INTEREST OTHER ACCOUNTS													85,437.78



INTEREST - FEES
INTEREST - FEES
													Total
Current Servicing Fees													23,500.28
Trustee Fees													2,029.61
TOTAL INTEREST FEES													25,529.90




Page 5 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution
Credit Enhancement Report
ACCOUNTS


SPACE INTENTIONALLY LEFT BLANK





INSURANCE

SPACE INTENTIONALLY LEFT BLANK



STRUCTURAL FEATURES
STRUCTURAL FEATURES
													Total
Overcollateralized Amount													4,350,077.32
Overcollateralization Reduction Amount													0.00
Overcollateralization Deficiency Amount													0.00
Overcollateralization Target Amount													4,350,077.32

Senior Enhancement Percentage													17.46%
Class A Certificate Defiency Amount													0.00



Page 6 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution
Collateral Report


COLLATERAL



														Total



*Loan Count:*


Original													2,051
Prior													1,994
Prefunding													0
Scheduled Paid Offs													-0
Full Voluntary Prepayments													-35
Repurchases													-0
Liquidations													-0
Current													1,959
*Principal Balance:*


Original													300,005,332.11
Prior													289,944,858.97
Prefunding													0.00
Scheduled Principal													-272,042.45
Partial Prepayments													-19,152.46
Full Voluntary Prepayments													-6,084,643.02
Repurchases													-0.00
Liquidations													-0.00
Current													283,569,021.04





PREFUNDING

SPACE INTENTIONALLY LEFT BLANK






Page 7 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution

CHARACTERISTICS
CHARACTERISTICS
													Total
Weighted Average Coupon Original													7.07883%
Weighted Average Coupon Prior													7.07624%
Weighted Average Coupon Current													7.06480%
Weighted Average Months to Maturity Original													348
Weighted Average Months to Maturity Prior													347
Weighted Average Months to Maturity Current													346
Weighted Avg Remaining Amortization Term Original													348
Weighted Avg Remaining Amortization Term Prior													347
Weighted Avg Remaining Amortization Term Current													346
Weighted Average Seasoning Original													2.45
Weighted Average Seasoning Prior													3.44
Weighted Average Seasoning Current													4.43









Page 8 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution

ARM CHARACTERISTICS
ARM CHARACTERISTICS
													Total
Weighted Average Margin Original													#######
Weighted Average Margin Prior													5.77129%
Weighted Average Margin Current													5.76941%
Weighted Average Max Rate Original													13.04074%
Weighted Average Max Rate Prior													13.03754%
Weighted Average Max Rate Current													13.02440%
Weighted Average Min Rate Original													7.04074%
Weighted Average Min Rate Prior													7.03754%
Weighted Average Min Rate Current													7.02440%
Weighted Average Cap Up Original													1.00000%
Weighted Average Cap Up Prior													1.00000%
Weighted Average Cap Up Current													1.00000%
Weighted Average Cap Down Original													1.00000%
Weighted Average Cap Down Prior													1.00000%
Weighted Average Cap Down Current													1.00000%




SERVICING FEES & ADVANCES

														Total




Current Servicing Fees													23,500.28
Delinquent Servicing Fees													97,310.07
TOTAL SERVICING FEES													120,810.36


Total Servicing Fees													120,810.36
Compensating Interest													-0.00
Delinquent Servicing Fees													-97,310.07
COLLECTED SERVICING FEES													23,500.29


Total Advanced Interest													1,276,845.59
Total Advanced Principal													218,230.11
Aggregate Advances with respect to this Distribution													1,495,075.70





ADDITIONAL COLLATERAL INFORMATION
													Total
Prepayment Interest Shortfall (PPIS)													0.00
Compensating Interest													-0.00
Net Prepayment Interest Shortfall (PPIS)													0.00


Ending Pool Stated Principal Balance													283,569,021.04
Weighted Average Net Mortgage Rate													6.556401%




Page 9 of 22
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Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution
Delinquency Report

	TOTAL
					< 1 PAYMENT	1 PAYMENT		2 PAYMENTS		3+ PAYMENTS		TOTAL
	DELINQUENT		Balance			1,862,744.96		518,187.59		0.00		2,380,932.55
			% Balance			0.66%		0.18%		0.00%		0.84%
			# Loans			16		6		0		22
			% # Loans			0.82%		0.31%		0.00%		1.12%
	FORECLOSURE		Balance		0.00	0.00		0.00		0.00		0.00
			% Balance		0.00%	0.00%		0.00%		0.00%		0.00%
			# Loans		0	0		0		0		0
			% # Loans		0.00%	0.00%		0.00%		0.00%		0.00%
	BANKRUPTCY		Balance		0.00	0.00		0.00		0.00		0.00
			% Balance		0.00%	0.00%		0.00%		0.00%		0.00%
			# Loans		0	0		0		0		0
			% # Loans		0.00%	0.00%		0.00%		0.00%		0.00%
	REO		Balance		0.00	0.00		0.00		0.00		0.00
			% Balance		0.00%	0.00%		0.00%		0.00%		0.00%
			# Loans		0	0		0		0		0
			% # Loans		0.00%	0.00%		0.00%		0.00%		0.00%
	TOTAL		Balance		0.00	1,862,744.96		518,187.59		0.00		2,380,932.55
			% Balance		0.00%	0.66%		0.18%		0.00%		0.84%
			# Loans		0	16		6		0		22
			% # Loans		0.00%	0.82%		0.31%		0.00%		1.12%









Page 10 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution
REO Report
Loan Number			Original		Stated			Current		State &

													First
&			Principal		Principal	Paid to		Note		LTV at		Original		Payment

Loan Group			Balance		Balance	Date		Rate		Origination		Term		Date
SPACE INTENTIONALLY LEFT BLANK
SPACE INTENTIONALLY LEFT BLANK



TOTAL



Page 11 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution
Foreclosure Report
Loan Number			Original		Stated			Current		State &

													First
&			Principal		Principal	Paid to		Note		LTV at		Original		Payment

Loan Group			Balance		Balance	Date		Rate		Origination		Term		Date




TOTAL



Page 12 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution
Prepayment Report

VOLUNTARY PREPAYMENTS
VOLUNTARY PREPAYMENTS

														Total




*Current*


Number of Paid in Full Loans													35
Number of Repurchased Loans													0
Total Number of Loans Prepaid in Full													35
Curtailments Amount													19,152.46
Paid in Full Balance													6,084,643.02
Repurchased Loans Balance													0.00
Total Prepayment Amount													6,103,795.48

*Cumulative*


Number of Paid in Full Loans													83
Number of Repurchased Loans													9
Total Number of Loans Prepaid in Full													92
Paid in Full Balance													14,279,087.71
Repurchased Loans Balance													1,248,690.13
Curtailments Amount													82,097.27
Total Prepayment Amount													15,609,875.11










Page 13 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution

VOLUNTARY PREPAYMENTS RATES
VOLUNTARY PREPAYMENTS RATES

														Total



SMM													2.11%
3 Months Avg SMM													1.77%
12 Months Avg SMM													1.77%
Avg SMM Since Cut-off													1.77%


CPR													22.55%
3 Months Avg CPR													19.28%
12 Months Avg CPR													19.28%
Avg CPR Since Cut-off													19.28%


PSA													2,543.86%
3 Months Avg PSA Approximation													2,801.60%
12 Months Avg PSA Approximation													2,801.60%
Avg PSA Since Cut-off Approximation													2,801.59%










Page 14 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution






PREPAYMENT CALCULATION METHODOLOGY

	Single Monthly Mortality (SMM): (Voluntary partial and full prepayments + Repurchases + Liquidations )/(Beg Principal Balance - Sched Principal)

	Conditional Prepayment Rate (CPR): 1-((1-SMM)^12)
	PSA Standard Prepayment Model: CPR/(0.002*min(30,WAS))
	PSA Standard Prepayment Model: CPR/(0.002*min(30,WAS))
	Average SMM over period between nth month and mth month (AvgSMMn,m): [(1-SMMn)(1-SMMn+1)...*(1-SMMm)]^(1/months in period n,m)
	Average CPR over period between the nth month and mth month (AvgCPRn,m): 1-((1-AvgSMMn,m)^12)

	Average PSA Approximation over period between the nth month and mth month: AvgCPRn,m/(0.002*Avg WASn,m))
	Average WASn,m: (min(30,WASn)+min(30,WASn+1)+...+min(30,WASm)/(number of months in the period n,m)

	Weighted Average Seasoning (WAS)

	Note: Prepayment rates are calculated since deal issue date and include partial and full voluntary prepayments, liquidations, and repurchases.
	Dates correspond to distribution dates.




Page 15 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution
Prepayment Detail Report
Prepayment Detail Report - Mortgage Loans Prepaid in Full During Current Distribution
Loan Number			Original						Current		State &		Type Prepayment		First
Loan Number			Original						Current		State &		Type Prepayment

&		Loan	Principal		Prepayment		Prepayment		Note		LTV at		&		Payment

Loan Group		Status	Balance		Amount		Date		Rate		Origination		Original Term		Date

65624801 0			216,000.00		211,891.69		16-Nov-2004		6.750%		FL - 81.97%		Paid Off - 360		2/1/2004
65624801 0			216,000.00		211,891.69		16-Nov-2004		6.750%		FL - 81.97%		Paid Off - 360		2/1/2004
66818741 0			122,000.00		121,033.08		01-Dec-2004		6.750%		FL - 89.97%		Paid Off - 360		3/1/2004
71328025 0			150,000.00		148,795.61		01-Dec-2004		6.050%		CA - 55.41%		Paid Off - 360		4/1/2004
71921746 0			51,000.00		50,732.67		12-Nov-2004		7.550%		MI - 50.70%		Paid Off - 360		5/1/2004
74889288 0			215,820.00		214,575.16		24-Nov-2004		6.250%		CA - 90.00%		Paid Off - 360		6/1/2004
81764367 0			151,290.00		150,170.12		09-Dec-2004		6.750%		OH - 90.00%		Paid Off - 360		8/1/2004
81908584 0			63,076.00		62,845.70		08-Dec-2004		8.990%		CA - 71.11%		Paid Off - 300		8/1/2004
82120361 0			248,500.00		247,465.62		01-Dec-2004		5.990%		CA - 78.90%		Paid Off - 360		8/1/2004
83218487 0			265,000.00		263,934.78		01-Dec-2004		5.990%		MD - 68.80%		Paid Off - 360		8/1/2004
83670208 0			392,760.00		391,846.18		18-Nov-2004		8.750%		CA - 90.00%		Paid Off - 360		8/1/2004
83834762 0			135,571.00		135,309.42		01-Dec-2004		9.650%		MN - 85.29%		Paid Off - 360		8/1/2004
84017003 0			100,000.00		99,645.86		23-Nov-2004		6.650%		MI - 62.63%		Paid Off - 360		8/1/2004
84198589 0			206,300.00		205,784.08		02-Dec-2004		6.950%		IL - 80.55%		Paid Off - 360		9/1/2004
84292481 0			155,700.00		155,351.17		24-Nov-2004		7.500%		IL - 77.77%		Paid Off - 360		9/1/2004
84449420 0			142,000.00		141,742.72		19-Nov-2004		8.550%		MI - 82.98%		Paid Off - 360		9/1/2004
84940600 0			121,000.00		120,754.29		26-Nov-2004		7.990%		IL - 82.20%		Paid Off - 360		9/1/2004
84972181 0			130,481.00		130,088.60		08-Dec-2004		5.990%		WI - 84.83%		Paid Off - 360		9/1/2004
85031045 0			235,500.00		235,021.80		30-Nov-2004		7.990%		MD - 89.96%		Paid Off - 360		9/1/2004
85033488 0			154,000.00		153,578.36		26-Nov-2004		6.500%		MD - 52.29%		Paid Off - 360		9/1/2004
85126100 0			60,000.00		59,843.44		23-Nov-2004		6.750%		CA - 62.57%		Paid Off - 360		9/1/2004
85143543 0			144,000.00		143,699.21		24-Nov-2004		7.850%		MD - 79.57%		Paid Off - 360		9/1/2004
85353324 0			116,000.00		115,715.01		30-Nov-2004		7.100%		IL - 60.23%		Paid Off - 360		9/1/2004
85403723 0			123,000.00		122,695.16		09-Dec-2004		6.990%		CA - 34.02%		Paid Off - 360		9/1/2004
85567980 0			84,856.00		84,692.54		01-Dec-2004		8.250%		PA - 90.00%		Paid Off - 360		9/1/2004
85573046 0			78,288.00		78,116.73		30-Nov-2004		8.250%		WA - 65.00%		Paid Off - 360		9/1/2004
85582724 0			220,497.00		219,889.91		18-Nov-2004		6.450%		GA - 67.70%		Paid Off - 360		9/1/2004
85625721 0			497,350.00		495,967.37		26-Nov-2004		6.400%		CA - 89.52%		Paid Off - 360		9/1/2004
86028743 0			93,000.00		92,393.37		26-Nov-2004		6.500%		WY - 63.36%		Paid Off - 360		9/1/2004
86280104 0			305,000.00		304,118.84		03-Dec-2004		6.200%		CA - 81.44%		Paid Off - 360		9/1/2004
86381621 0			177,000.00		176,694.36		24-Nov-2004		6.750%		FL - 72.69%		Paid Off - 360		10/1/2004
86452125 0			209,066.00		208,558.93		24-Nov-2004		7.100%		IL - 79.40%		Paid Off - 360		9/1/2004
86495942 0			200,000.00		199,454.63		24-Nov-2004		6.500%		NJ - 68.20%		Paid Off - 360		9/1/2004
86972403 0			245,800.00		245,215.50		26-Nov-2004		7.200%		CA - 82.08%		Paid Off - 360		9/1/2004
87459046 0			88,667.00		88,528.00		18-Nov-2004		9.250%		GA - 90.00%		Paid Off - 360		9/1/2004
87534202 0			209,000.00		208,493.11		03-Dec-2004		7.100%		NY - 63.96%		Paid Off - 360		9/1/2004


TOTAL			6,107,522.00		6,084,643.02
TOTAL


Page 16 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution
Realized Loss Report

COLLATERAL REALIZED LOSSES



														Total


*Current*
*Current*



Number of Loans Liquidated													0
Collateral Principal Realized Loss/(Gain) Amount													0.00
Collateral Interest Realized Loss/(Gain) Amount													0.00
Net Liquidation Proceeds													0.00

*Cumulative*
*Cumulative*



Number of Loans Liquidated													0
Collateral Realized Loss/(Gain) Amount													0.00
Net Liquidation Proceeds													0.00










Page 17 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution


DEFAULT SPEEDS



														Total



MDR													0.00%
3 Months Avg MDR													0.00%
12 Months Avg MDR													0.00%
Avg MDR Since Cut-off													0.00%


CDR													0.00%
3 Months Avg CDR													0.00%
12 Months Avg CDR													0.00%
Avg CDR Since Cut-off													0.00%


SDA													0.00%
3 Months Avg SDA Approximation													0.00%
12 Months Avg SDA Approximation													0.00%
Avg SDA Since Cut-off Approximation													0.00%


Loss Severity Approximation for Current Period													0.00%
3 Months Avg Loss Severity Approximation													0.00%
12 Months Avg Loss Severity Approximation													0.00%
Avg Loss Severity Approximation Since Cut-off													0.00%












Page 18 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution





COLLATERAL REALIZED LOSS CALCULATION METHODOLOGY
	Monthly Default Rate (MDR): (Beg Principal Balance of Liquidated Loans)/(Total Beg Principal Balance)



	Conditional Default Rate (CDR): 1-((1-MDR)^12)

	SDA Standard Default Assumption: CDR/IF(WAS<61,MIN(30,WAS)0.02,MAX(0.03,MIN(30,WAS)0.02-0.0095*(WAS-60)))

	Average MDR over period between nth month and mth month (AvgMDRn,m): [(1-MDRn)(1-MDRn+1)...*(1-MDRm)]^(1/months in period n,m)
	Average CDR over period between the nth month and mth month (AvgCDRn,m): 1-((1-AvgMDRn,m)^12)

	Average SDA Approximation over period between the nth month and mth month:
	AvgCDRn,m/IF(Avg WASn,m<61,MIN(30,Avg WASn,m)0.02,MAX(0.03,MIN(30,Avg WASn,m)0.02-0.0095*(Avg WASn,m-60)))

	Average WASn,m: (WASn + WASn+1 +...+ WASm )/(number of months in the period n,m)
	Loss Severity Approximation for current period: sum(Realized Loss Amount)/sum(Beg Principal Balance of Liquidated Loans)

	Average Loss Severity Approximation over period between nth month and mth month: Avg(Loss Severityn,m)

	Note: Default rates are calculated since deal issue date and include realized gains and additional realized losses and gains from prior periods.
	Dates correspond to distribution dates.




Page 19 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution
Realized Loss Detail Report
Loan Number			Current		State &			Prior		Realized				Cumulative
														Cumulative
&		Loan	Note		LTV at	Original		Principal		Loss/(Gain)		Realized		Realized

Loan Group		Status	Rate		Origination	Term		Balance		Revision		Loss/(Gain)		Loss/(Gain)
Loan Group		Status	Rate		Origination	Term		Balance		Revision		Loss/(Gain)		Loss/(Gain)




TOTAL



Page 20 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution
Triggers and Adj. Cert. Report
TRIGGER EVENTS
TRIGGER EVENTS
													Total
Does a Trigger Event Exist? (0=No,1=Yes)													0
Has a Stepdown Date Occurred? (0=No,1=Yes)													0



ADJUSTABLE RATE CERTIFICATE INFORMATION

SPACE INTENTIONALLY LEFT BLANK



ADDITIONAL INFORMATION
ADDITIONAL INFORMATION
													Total
Current LIBOR Rate													2.180000%
Next LIBOR Rate													2.417500%




Page 21 of 22
Ameriquest Mortgage Securities, Inc. 2004-IA1

Mortgage Pass-Through Certificates
Mortgage Pass-Through Certificates
2004-IA1

December 27, 2004 Distribution
Additional Certificate Report

ADDITIONAL CERTIFICATE REPORT

									Next Pass Through Rate			NET WAC Shortfall CarryOver		NET WAC Shortfall Paid
CLASS

			A-1						2.67%			$0.00		$0.00
									2.67%			$0.00		$0.00
			A-2						2.83%			$0.00		$0.00
									2.83%			$0.00		$0.00
			A-3						3.07%			$0.00		$0.00
									3.07%			$0.00		$0.00
			M-1						3.22%			$0.00		$0.00
									3.22%			$0.00		$0.00
			M-2						3.32%			$0.00		$0.00
									3.32%			$0.00		$0.00
			M-3						3.47%			$0.00		$0.00
									3.47%			$0.00		$0.00
			M-4						3.92%			$0.00		$0.00
									3.92%			$0.00		$0.00
			M-5						4.17%			$0.00		$0.00
									4.17%			$0.00		$0.00
			M-6						4.64%			$0.00		$0.00
									4.64%			$0.00		$0.00
			M-7						5.92%			$0.00		$0.00
									5.92%			$0.00		$0.00
			M-8						5.92%			$0.00		$0.00
									5.92%			$0.00		$0.00
			M-9						4.92%			$0.00		$0.00
									4.92%			$0.00		$0.00
			CE						0.00%			$0.00		$0.00
									0.00%			$0.00		$0.00
			P						0.00%			$0.00		$0.00
									0.00%			$0.00		$0.00
			R						0.00%			$0.00		$0.00
									0.00%			$0.00		$0.00






Page 22 of 22

AMERIQUEST MORTGAGE SECURITIES INC. ASSET-BACKED PASS-THROUGH CERTIFICATES SERIES 2004-IA1 8-K