; (4) $390,000,000 for the renewal of tenant-based assistance contracts under section 811 of the Cranston-Gonzalez National Affordable Housing Act ( 42 U.S.C. 8013 ), including necessary administrative expenses: Provided , That administrative and other expenses of public housing agencies in administering the special purpose vouchers in this paragraph shall be funded under the same terms under paragraph (3) of this heading, except for any pro rata reduction: Provided further , That any amounts provided under this paragraph in this Act or prior Acts, remaining available after funding renewals and administrative expenses under this paragraph, shall be available only for incremental tenant-based rental assistance contracts under such section 811 for non-elderly persons with disabilities, including necessary administrative expenses: Provided further , That, upon turnover, section 811 special purpose vouchers funded under this heading in this or prior Acts, or under any other heading in prior Acts, shall be provided to non-elderly persons with disabilities