; and (B) by adding at the end the following: (B) Exception With respect to an assisted small business that is a small manufacturer (as defined in section 501(e)(7)), the small manufacturer may lease not more than 49 percent of the project to 1 or more other tenants, if the small manufacturer occupies permanently and uses not less than a total of 51 percent of the space in the project after the execution of any leases authorized under this section, without regard to whether the project is with respect to an existing building or new construction. . (5) Collateral requirements Section 502(3)(E)(i) of the Small Business Investment Act of 1958 ( 15 U.S.C. 696(3)(E)(i) ), is amended by adding at the end the following: Additional collateral shall not be required in the case of a small manufacturer (as defined in section 501(e)(7)). . (6) Debt refinancing Section 502(7)(B) of the Small Business Investment Act of 1958 ( 15 U.S.C. 696(7)(B) ) is amended in the matter preceding clause (i) by inserting (or in the case of a small manufacturer (as defined in section 501(e)(7)) that does not exceed 100 percent of the project cost of the expansion) after cost of the expansion . (7) Amount of guaranteed debenture Section 503(a) of the Small Business Investment Act of 1958 ( 15 U.S.C. 697(a) ) is amended by adding at the end the following: (5) Any debenture issued by a State or local development company to a small manufacturer (as defined in section 501(e)(7)) with respect to which a guarantee is made under this subsection shall be in an amount equal to not more than 50 percent of the cost of the project with respect to which such debenture is issued, without regard to whether good cause has been shown. . (d) Manufacturing debentures (1) In general Section 303 of the Small Business Investment Act of 1958 ( 15 U.S.C. 683 ) is amended by adding at the end the following: (l) Manufacturing debentures In addition to any other authority under this Act, on and after the first day of the first fiscal year beginning after the date of