In C6-3 Districts without a letter suffix in Mandatory Inclusionary Housing Program Area 4, as of February 14, 2018, in Community District 1, in the Borough of the Bronx, for an MIH development that is also an MIH site or for a development containing no residences other than affordable independent residence for seniors, the street wall location and height and setback provisions of Sections 35-651 and 35-652 shall not apply. In lieu thereof, the height and setback regulations for an R9-1 District set forth in paragraph (c) of Section 23-664 (Modified height and setback regulations for certain Inclusionary Housing buildings or affordable independent residences for seniors), shall apply.