For any Marginal Area (or, within the Administrator’s discretion, portion thereof), the plan for which already includes, or was required by
section 7502(b)(11)(B) of this title (as in effect immediately before
November 15, 1990) to have included, a specific schedule for implementation of a vehicle emission control inspection and maintenance program, the State shall submit, immediately after
November 15, 1990, a revision that includes any provisions necessary to provide for a vehicle inspection and maintenance program of no less stringency than that of either the program defined in House Report Numbered 95–294, 95th Congress, 1st Session, 281–291 (1977) as interpreted in guidance of the Administrator issued pursuant to
section 7502(b)(11)(B) of this title (as in effect immediately before
November 15, 1990) or the program already included in the plan, whichever is more stringent.