et seq. (title V)), may be deobligated and reobligated to a self-determination contract under title I, or a self-governance agreement under title V of such Act and thereafter shall remain available to the tribe or tribal organization without fiscal year limitation: Provided further , That none of the funds made available to the Indian Health Service in this Act shall be used to implement the final rule published in the Federal Register on September 16, 1987, by the Department of Health and Human Services, relating to the eligibility for the health care services of the Indian Health Service until the Indian Health Service has submitted a budget request reflecting the increased costs associated with the proposed final rule, and such request has been included in an appropriations Act and enacted into law: Provided further , That with respect to functions transferred by the Indian Health Service to tribes or tribal organizations, the Indian Health Service is authorized to provide goods and services to those entities on a reimbursable basis, including payments in advance with subsequent adjustment, and the reimbursements received therefrom, along with the funds received from those entities pursuant to the Indian Self-Determination Act, may be credited to the same or subsequent appropriation account from which the funds were originally derived, with such amounts to remain available until expended: Provided further , That reimbursements for training, technical assistance, or services provided by the Indian Health Service will contain total costs, including direct, administrative, and overhead costs associated with the provision of goods, services, or technical assistance: Provided further , That the Indian Health Service may provide to civilian medical personnel serving in hospitals operated by the Indian Health Service housing allowances equivalent to those that would be provided to members of the Commissioned Corps of the United States Public Health Service serving in similar positions at such hospitals: Provided