Document:

<PAGE>
                                                                   Exhibit 10.11

                              AMENDMENT NUMBER SIX
                                     to the
                  AMENDED AND RESTATED NOTE PURCHASE AGREEMENT,
                          dated as of November 25, 2003
                                      among
                         OPTION ONE OWNER TRUST 2001-2,
                      OPTION ONE LOAN WAREHOUSE CORPORATION
                                       and
                              BANK OF AMERICA, N.A.

          This AMENDMENT NUMBER SIX (this "Amendment") is made and is effective
as of this 30th day of September, 2005 (the "Effective Date"), among Option One
Owner Trust 2001-2 (the "Issuer"), Option One Loan Warehouse Corporation (the
"Depositor") and Bank of America, N.A. ("BofA", and in its capacity as
Purchaser, the "Purchaser") to the Amended and Restated Note Purchase Agreement,
dated as of November 25, 2003, as amended (the "Note Purchase Agreement"), among
the Issuer, the Depositor and the Purchaser.

                                    RECITALS

          WHEREAS, the Issuer has requested that the Purchaser agree to amend
the Note Purchase Agreement to increase the Maximum Note Principal Balance from
$3,000,000,000 to $3,500,000,000 and the Purchaser has agreed to make such
amendments, subject to the terms and conditions of this Amendment.

          NOW THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, and the mutual covenants herein
contained, the parties hereto hereby agree as follows:

          SECTION 1. Defined Terms. Any capitalized terms used but not otherwise
defined herein shall have the respective meanings set forth in the Note Purchase
Agreement.

          SECTION 2. Amendment. As of the Effective Date, the definition of
"Maximum Note Principal Balance" in Section 1.01 is hereby deleted in its
entirety and replaced with the following:

          "Maximum Note Principal Balance" means, an amount equal to
$3,500,000,000, less any reductions pursuant to Section 2.06 of the Sale and
Servicing Agreement.

          SECTION 3. Representations. To induce the Purchaser to execute and
deliver this Amendment, each of the Issuer and the Depositor hereby represents
to the Purchaser that as of the date hereof, after giving effect to this
Amendment, (a) all of its respective representations and warranties in the Note
Purchase Agreement and the other Basic Documents are true and correct, and (b)
it is otherwise in full compliance with all of the terms and conditions of the
Note Purchase Agreement.

                                        1

<PAGE>

          SECTION 4. Fees and Expenses. The Issuer and the Depositor jointly and
severally covenant to pay as and when billed by the Purchaser all of the
reasonable out-of-pocket costs and expenses incurred in connection with the
transactions contemplated hereby and in the other Basic Documents including,
without limitation, (i) all reasonable fees, disbursements and expenses of
counsel to the Purchaser, (ii) all reasonable fees and expenses of the Indenture
Trustee and Owner Trustee and their counsel and (iii) all reasonable fees and
expenses of the Custodian and its counsel.

          SECTION 5. Limited Effect. Except as expressly amended and modified by
this Amendment, the Note Purchase Agreement shall continue in full force and
effect in accordance with its terms. Reference to this Amendment need not be
made in the Note Purchase Agreement or any other instrument or document executed
in connection therewith, or in any certificate, letter or communication issued
or made pursuant to, or with respect to, the Note Purchase Agreement, any
reference in any of such items to the Note Purchase Agreement being sufficient
to refer to the Note Purchase Agreement as amended hereby.

          SECTION 6. GOVERNING LAW. THIS AMENDMENT SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD
TO THE CONFLICT OF LAWS DOCTRINE APPLIED IN SUCH STATE.

          SECTION 7. Counterparts. This Amendment may be executed by each of the
parties hereto in any number of separate counterparts, each of which when so
executed shall be an original and all of which taken together shall constitute
one and the same instrument.

          SECTION 8. Limitation on Liability. It is expressly understood and
agreed by the parties hereto that (a) this Amendment is executed and delivered
by Wilmington Trust Company, not individually or personally, but solely as Owner
Trustee of Option One Owner Trust 2001-2 in the exercise of the powers and
authority conferred and vested in it, (b) each of the representations,
undertakings and agreements herein made on the part of the Issuer is made and
intended not as personal representations, undertakings and agreements by
Wilmington Trust Company but is made and intended for the purpose for binding
only the Issuer, (c) nothing herein contained shall be construed as creating any
liability on Wilmington Trust Company, individually or personally, to perform
any covenant either expressed or implied contained herein, all such liability,
if any, being expressly waived by the parties hereto and by any Person claiming
by, through or under the parties hereto and (d) under no circumstances shall
Wilmington Trust Company be personally liable for the payment of any
indebtedness or expenses of the Issuer or be liable for the breach or failure of
any obligation, representation, warranty or covenant made or undertaken by the
Issuer under this Amendment or any other related document.

                                        2

<PAGE>

          IN WITNESS WHEREOF, the parties hereto have caused this Amendment to
be executed and delivered by their duly authorized officers as of the day and
year first above written.

                                        OPTION ONE OWNER TRUST 2001-2

                                        By: Wilmington Trust Company, not in its
                                            individual capacity but solely as
                                            owner trustee

                                        By: /s/ Mary Kay Pupillo
                                            ------------------------------------
                                        Name: Mary Kay Pupillo
                                        Title: Assistant Vice President

                                        OPTION ONE LOAN WAREHOUSE CORPORATION

                                        By: /s/ CR Fulton
                                            ------------------------------------
                                        Name: Charles R. Fulton
                                        Title: Assistant Secretary

                                        BANK OF AMERICA, N.A.

                                        By: /s/ Christopher G. Young
                                            ------------------------------------
                                        Name: Christopher G. Young
                                        Title: Vice President

        [Signature Page to Amendment Six to the Amended and Restated Note
                               Purchase Agreement]<PAGE>
                                                                   Exhibit 10.12

                              AMENDMENT NUMBER TWO
                                     to the
               AMENDED AND RESTATED SALE AND SERVICING AGREEMENT,
                         Dated as of November 25, 2003,
                                      among
                         OPTION ONE OWNER TRUST 2001-2,
                     OPTION ONE LOAN WAREHOUSE CORPORATION,
                         OPTION ONE MORTGAGE CORPORATION
                                       and
                              WELLS FARGO BANK N.A.

          This AMENDMENT NUMBER TWO (this "Amendment") is made and is effective
as of this 17th day of December, 2004, among Option One Owner Trust 2001-2 (the
"Issuer"), Option One Loan Warehouse Corporation (the "Depositor"), Option One
Mortgage Corporation (the "Loan Originator" and the "Servicer") and Wells Fargo
Bank N.A., as Indenture Trustee (the "Indenture Trustee"), to the Amended and
Restated Sale and Servicing Agreement, dated as of November 25, 2003 (as
amended, the "Sale and Servicing Agreement"), among the Issuer, the Depositor,
the Loan Originator, the Servicer and the Indenture Trustee, as otherwise
amended.

                                    RECITALS

          WHEREAS, the parties hereto desire to amend the Sale and Servicing
Agreement subject to the terms and conditions of this Amendment.

          NOW THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, and the mutual covenants herein
contained, the parties hereto hereby agree as follows:

          SECTION 1. Defined Terms. Any terms capitalized but not otherwise
defined herein shall have the respective meanings set forth in the Sale and
Servicing Agreement.

          SECTION 2. Amendments. Effective as of December 17, 2004 the following
amendments shall be in full force and effect.

     (i)  Section 1.01 of the Sale and Servicing Agreement is hereby amended by
          deleting in its entirety clause (a) in the definition of "Financial
          Covenants" and replacing such definition with the following:

               (a) Option One must maintain a minimum "Tangible Net Worth"
          (defined and determined in accordance with GAAP and exclusive of (i)
          any loans outstanding to any officer or director of Option One or its
          Affiliates (ii) any intangibles (other than originated or purchased
          servicing rights) and (iii) any receivables from H&R Block) of $425
          million as of any day;

<PAGE>

     (ii) Section 1.01 of the Sale and Servicing Agreement is hereby amended by
          deleting clause (b) in its entirety and replacing it with the
          following:

               (b) Option One must maintain a ratio of 1.0 or greater at any
          time pursuant to the Capital Adequacy Test, attached as Exhibit H
          hereto.

     (iii) Section 1.01 of the Sale and Servicing Agreement is hereby amended by
          deleting the number "100%" in clause (c) of the definition of
          "Financial Covenants", of the third line thereof and replacing it with
          "91%".

     (iv) Section 1.01 of the Sale and Servicing Agreement is hereby amended by
          deleting the number "80%" in clause (c) of the definition of
          "Financial Covenants", of the third line thereof and replacing it with
          "90%".

     (v)  Section 1.01 of the Sale and Servicing Agreement is hereby amended by
          adding the following after clause (d) of the definition of "Financial
          Covenants":

               (e) Option One must maintain a minimum "Net Income" (defined and
          determined in accordance with GAAP) of at least $1 based on the total
          of the current quarter combined with the previous three quarters.

     (vi) Schedule One to this Amendment shall be attached as Exhibit H of the
          Sale and Servicing Agreement.

          SECTION 3. Representations. In order to induce the parties hereto to
execute and deliver this Amendment, each of the Issuer, the Depositor and the
Loan Originator hereby jointly and severally represents to the other parties
hereto and the Noteholders that as of the date hereof, after giving effect to
this Amendment, (a) all of its respective representations and warranties in the
Note Purchase Agreement and the other Basic Documents are true and correct, and
(b) it is otherwise in full compliance with all of the terms and conditions of
the Sale and Servicing Agreement.

          SECTION 4. Limited Effect. Except as expressly amended and modified by
this Amendment, the Sale and Servicing Agreement shall continue in full force
and effect in accordance with its terms. Reference to this Amendment need not be
made in the Sale and Servicing Agreement or any other instrument or document
executed in connection therewith or herewith, or in any certificate, letter or
communication issued or made pursuant to, or with respect to, the Sale and
Servicing Agreement, any reference in any of such items to the Sale and
Servicing Agreement being sufficient to refer to the Sale and Servicing
Agreement as amended hereby.

          SECTION 5. Fees and Expenses. The Issuer and the Depositor jointly and
severally covenant to pay as and when billed by the Initial Noteholder all of
the reasonable out-of-pocket costs and expenses incurred in connection with the
transactions contemplated hereby and in the other Basic Documents including,
without limitation, (i) all reasonable fees, disbursements and expenses of
counsel to the Initial Noteholder, (ii) all reasonable fees and expenses of the
Indenture Trustee and Owner Trustee and their counsel and (iii) all reasonable
fees and expenses of the Custodian and its counsel.

                                        2

<PAGE>

          SECTION 6. GOVERNING LAW. THIS AMENDMENT SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD
TO THE CONFLICT OF LAWS DOCTRINE APPLIED IN SUCH STATE.

          SECTION 7. Counterparts. This Amendment may be executed by each of the
parties hereto on any number of separate counterparts, each of which shall be an
original and all of which taken together shall constitute one and the same
instrument.

          SECTION 8. Limitation on Liability. It is expressly understood and
agreed by the parties hereto that (a) this Amendment is executed and delivered
by Wilmington Trust Company, not individually or personally, but solely as Owner
Trustee of Option One Owner Trust 2001-2 in the exercise of the powers and
authority conferred and vested in it, (b) each of the representations,
undertakings and agreements herein made on the part of the Issuer is made and
intended not as personal representations, undertakings and agreements by
Wilmington Trust Company but is made and intended for the purpose for binding
only the Issuer, (c) nothing herein contained shall be construed as creating any
liability on Wilmington Trust Company, individually or personally, to perform
any covenant either expressed or implied contained herein, all such liability,
if any, being expressly waived by the parties hereto and by any Person claiming
by, through or under the parties hereto and (d) under no circumstances shall
Wilmington Trust Company be personally liable for the payment of any
indebtedness or expenses of the Issuer or be liable for the breach or failure of
any obligation, representation, warranty or covenant made or undertaken by the
Issuer under this Amendment or any other related documents.

                                        3

<PAGE>

          IN WITNESS WHEREOF, the parties hereto have caused this Amendment to
be executed and delivered by their duly authorized officers as of the day and
year first above written.

                                        OPTION ONE OWNER TRUST 2001-2

                                        By: Wilmington Trust Company, not in its
                                            individual capacity but solely as
                                            owner trustee

                                        By: /s/ Mary Kay Pupillo
                                            ------------------------------------
                                        Name: Mary Kay Pupillo
                                        Title: Assistant Vice President

                                        OPTION ONE LOAN WAREHOUSE CORPORATION

                                        By: /s/ CR Fulton
                                            ------------------------------------
                                        Name: Charles R. Fulton
                                        Title: Assistant Secretary

                                        OPTION ONE MORTGAGE CORPORATION

                                        By: /s/ CR Fulton
                                            ------------------------------------
                                        Name: Charles R. Fulton
                                        Title: Vice President

                                        WELLS FARGO BANK N.A., as Indenture
                                        Trustee

                                        By: /s/ Reid Denny
                                            ------------------------------------
                                        Name: Reid Denny
                                        Title: Vice President

          [Signature Page to Amendment Two to the Amended and Restated
                          Sale and Servicing Agreement]

                                        4

<PAGE>

                                  SCHEDULE ONE

                              CAPITAL ADEQUACY TEST

        *For each field multiply the HRB% by the Balance Sheet Amount for
                                Required Capital

<TABLE>
<CAPTION>
                                          HRB TEST   BALANCE SHEET   REQUIRED CAPITAL
                                          --------   -------------   ----------------
<S>                                       <C>        <C>             <C>
Unrestricted Cash and Equivalents             0%
Restricted Cash                               0%
Loans Held for Sale                           9%
Servicing Advances                           10%
Beneficial Interests in trusts               10%
Subprime Mortgage NIM Residual Interest      60%
Real Estate Held for Sale                    10%
Furniture and Equipment                       0%
Mortgage Servicing Rights                    25%
Prepaid Expenses and Other Assets            10%
Accrued interest receivable                  10%
Receivable from H&R Block                     0%
Intangibles and goodwill                    100%
Deferred Tax Assets                          10%
Derivative Assets                            10%
   TOTAL REQUIRED CAPITAL
</TABLE>

Total Owners Equity on Balance Sheet Date
Less: Receivables from H&R Block

Adjusted Net Worth

Adjusted Net Worth divided by Required Capital = Ratio for Capital Adequacy Test

                                        5

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