Document:

<PAGE>   1
                                                                   EXHIBIT 10.57

                             Amendment No. 2 to the
                             Tractor Supply Company
                         Restated 401(k) Retirement Plan

Pursuant to the provisions of Article 14 of the Plan, this Plan is hereby
amended as follows:

I.       Effective January 1, 1999:

         1.       By deleting Section 8.5 (a) (2) in Article 8. VESTING,
                  FORFEITURES, AND BREAK IN SERVICE.

         2.       By substituting the following for Section 8.5 (a) (1) in
                  Article 8. VESTING, FORFEITURES, AND BREAK IN SERVICE:

                  "8.5     Application of Forfeitures.

                           (a)      Funds held in the Deposit Account which are
                                    attributable to a former Participant's
                                    non-vested interest in all Contributions
                                    shall be applied as follows:

                                    (1)      To restore a Participant's Account
                                             in accordance with the provisions
                                             of Section 8.6;

                                    (2)      To reduce future Employer
                                             Contributions."

II.      Effective January 1, 2000:

         1.       By adding the following to Section 2.1 (a) in Article 2.
                  ELIGIBILITY AND PARTICIPATION:

                  "(2)     Notwithstanding the Service requirement in Section
                           2.1 (a) (1), and Employee in the Eligible Class who
                           has completed at least five months of service and
                           attained Age 21 on or before July 1, 2000 shall
                           become a Participant on July 1, 2000."

         2.       By substituting the following for Section 3.2 in Article 3.
                  CONTRIBUTIONS:

                  "3.2     Matching Contributions. The Employer will make a
                           matching Contribution each month for each Participant
                           in accordance with the following formula:

                           (a)      100% of the elective Contributions made
                                    under Section 3.1 above, up to 3% of the
                                    participant's Compensation; and

                           (b)      50% of the Elective Contributions made under
                                    Section 3.1 above, from 3% to 6% of the
                                    participant's Compensation.

                  In no event shall the total Matching Contribution made on
                  behalf of a Participant exceed 4.5% of such Participant's
                  Compensation in any Plan Year."
<PAGE>   2

         3.       By deleting Sections 5.1 through 5.9 in their entireties in
                  Article 5. NON-DISCRIMINATION TESTING and substituting, in
                  lieu thereof, the following:

                  "5.1     Requirements. In order that Contributions made under
                           the Plan do not discriminate in favor of Highly
                           Compensated Employees, the actual deferral percentage
                           ("ADP") test in Code Section 401(k) (3) and the
                           actual contribution percentage ("ACP") test in Code
                           Section 401(m) shall be satisfied each year by the
                           Employer's matching contributions under Section 3.2
                           above that satisfy the ADP test safe harbor and the
                           ACP test safe harbor under Code Sections 401(k) (12)
                           and 401(m) (11), respectively."

         4.       By deleting Section 5.10 in its entirety in Article 5.
                  NONDISCRIMINATION TESTING and renumbering it as Section 5.2 to
                  provide as follows:

                  "5.2     Additional Requirements. All contributions used to
                           satisfy the ADP test safe harbor and the ACP test
                           safe harbor that are allocated to a Participant's
                           Account under the terms of the Plan as of any date
                           within the Plan Year shall be actually paid to the
                           Plan's trust by the Employer within the time
                           prescribed by law, including extension of time for
                           filing its federal tax return for the applicable year
                           but in no event later than 12 months after the close
                           of the Plan Year to which such Contributions relate."

         5.       By deleting Section 6.5(c) in its entirety in Article 6 TOP
                  HEAVY PROVISIONS and substituting, in lieu thereof, the
                  following:

                  "Except as authorized by Regulation 1.416-1, no matching
                  contribution shall be used in determining whether a non-key
                  Employee has received the required minimum allocation."

         6.       By substituting the following for Section 8.1 in Article 8.
                  VESTING FORFEITURES, AND BREAK IN SERVICE:

                  "8.1     Vesting Schedule. A Participant shall have a vested
                           interest of 100% in that portion of his Participant's
                           Account equal to the value of Elective Contributions,
                           Qualified Non-Elective Contributions, Voluntary
                           Individual Retirement Amounts, Special Employer
                           Contributions, Employee Contributions, Matching
                           Contributions made for Plan Years beginning on and
                           after January 1, 2000 and Rollover Amounts standing
                           to his credit in such account. Upon death, Disability
                           or attainment of his Normal Retirement Age or Early
                           Retirement Date, a Participant shall also have a
                           vested interest of 100% in that portion of his
                           Participant's Account equal to the value of any Basic
                           Contributions, Optional Employer Contributions,
                           Matching Contributions made for Plan Years beginning
                           prior to January 1, 2000, Employer Stock Amounts and
                           any Minimum Contributions standing to his credit in
                           such account. In all other cases, a Participant's
                           vested interest in that portion of his Participant's
                           Account attributable to Basic Contributions, Matching
                           Contributions made for Plan Years beginning prior to
                           January 1, 2000, Optional Employer Contributions,
                           Employer Stock Amounts and Minimum Contributions
                           shall be based on his Years of Service in accordance
                           with the following schedules, except as required
                           under Article 6:
<PAGE>   3

                           (a)      For Plan Years prior to January 1, 1997:

<TABLE>
<CAPTION>
                            Completed Years                      Percentage of
                              of Service                        Vested Interest
                            ---------------                     ---------------
                            <S>                                 <C>
                              Less than 3                             None
                                   3                                   20%
                                   4                                   40%
                                   5                                   60%
                                   6                                   80%
                               7 or more                              100%
</TABLE>

                           (b)      For Plan Years beginning on or after January
                                    1, 1997:

<TABLE>
<CAPTION>
                            Completed Years                      Percentage of
                              of Service                        Vested Interest
                            ---------------                     ---------------
                            <S>                                 <C>
                              Less than 2                             None
                                   2                                   20%
                                   3                                   40%
                                   4                                   60%
                                   5                                   80%
                               6 or more                              100%
</TABLE>

7.       By substituting the following for Section 9.5 in Article 9. WITHDRAWALS
         AND LOANS DURING PARTICIPATION:

         "9.5     Withdrawal for Terminal Illness. A Participant may elect to
                  withdraw any amounts attributable to Basic Employer
                  Contributions, Matching Contributions made for Plan Years
                  beginning before January 1, 2000, Optional Employer
                  Contributions, Special Employer Contributions and Employer
                  Stock Amounts only upon a determination by the Plan
                  Administrator that such Participant has a terminal illness,
                  which shall mean a physical condition which, more likely than
                  not, will result in the Participant's death, even with medical
                  treatment, within 12 months from the date of the Participant's
                  request for the withdrawal. Such determination shall be made
                  by the Plan Administrator based upon a medical opinion from a
                  licensed physician acceptable to the Plan Administrator."

In witness whereof, the Employer hereby causes this amendment to be executed on
this 15th day of December, 1999.

                                    Employer: Tractor Supply Company

                                    By:    /s/ Daisy L. Vanderlinde
                                          ------------------------------------

                                    Title:   Vice President-Human Resources
                                             ---------------------------------<PAGE>   1
                                                                    EXHIBIT 4.1

NUMBER SHARES COMMON STOCK SEE REVERSE FOR CERTAIN DEFINITIONS

FLORIDA COASTLINE COMMUNITY GROUP, INC.
INCORPORATED UNDER THE LAWS OF THE STATE OF FLORIDA

                                                                          CUSIP

THIS CERTIFIES THAT ___________________________________ is the record owner of
______________________________________________________________________________
FULLY PAID AND NON-ASSESSABLE SHARES WITH A PAR VALUE OF $.01 EACH OF THE
COMMON STOCK OF FLORIDA COASTLINE COMMUNITY GROUP, INC.

transferable on the books of the Corporation by the holder hereof in person or
by duly authorized Attorney, upon surrender of this Certificate properly
endorsed. This Certificate is not valid unless countersigned and registered by
the Transfer Agent and Registrar.

         WITNESS the facsimile seal and the facsimile signatures of the duly
authorized officers of the Corporation.

Dated: ______________________

[FLORIDA COASTLINE COMMUNITY GROUP, INC. SEAL]

/s/ James C. Merrill                             /s/ Hans C. Mueller
-----------------------                          -----------------------------
Secretary                                        President and Chief Executive
                                                 Officer

COUNTERSIGNED AND REGISTERED:

AMERICAN STOCK TRANSFER & TRUST COMPANY TRANSFER AGENT AND REGISTRAR BY
AUTHORIZED SIGNATURE FLORIDA COASTLINE COMMUNITY GROUP, INC. THE CORPORATION
WILL FURNISH WITHOUT CHARGE TO EACH STOCKHOLDER WHO SO REQUESTS THE POWERS,
DESIGNATIONS, PREFERENCES AND RELATIVE, PARTICIPATING, OPTIONAL, OR OTHER
SPECIAL RIGHTS OF EACH CLASS OF STOCK OR SERIES THEREOF WHICH THE CORPORATION
IS AUTHORIZED TO ISSUE AND THE QUALIFICATIONS, LIMITATIONS OR RESTRICTIONS OF
SUCH PREFERENCES AND/OR RIGHTS OF EACH SUCH CLASS OF STOCK OR SERIES THEREOF.
ANY SUCH REQUEST SHOULD BE MADE TO THE SECRETARY OF THE CORPORATION AT ITS
PRINCIPAL PLACE OF BUSINESS OR TO THE TRANSFER AGENT AND REGISTRAR.

<PAGE>   2

The following abbreviations, when used in the inscription on the face of this
certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>                                               <C>
TEN COM -- as tenants in common                   UNIF GIFT MIN ACT - ...Custodian....
TEN ENT -- as tenants by the entireties                    (Cust) (Minor

JT TEN -- as joint tenants with right of          under Uniform Gifts to minors
               survivorship and not as tenants    Act..........................
         in common                                (State)
</TABLE>

Additional abbreviations may also be used though not in the above list. For
value received, _________________________________ hereby sell, assign and
transfer unto

PLEASE INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER OF
ASSIGNEE [                             ]
________________________________________________________________________________
(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS INCLUDING ZIP CODE OF
ASSIGNEE)
________________________________________________________________________________

_________________________________________________________________________shares

of the capital stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint
_____________________________________________Attorney to transfer the said
stock on the books of the within named Corporation with full power of
substitution in the premises.

Dated ________________________________________

NOTICE: THE SIGNATURE TO THE ASSIGNMENT MUST CORRESPOND WITH THE NAME AS
WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT
ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATSOEVER.

________________________________________________________________________________

SIGNATURE(S) GUARANTEED: [THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE
GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND
CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION
PROGRAM), PURSUANT TO S.E.C. RULE 17Ad-15.

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