i have a 90 gxl that had the air pump, acv, cats removed by a previous owner and i think it has a block off plate on now.
i was hoping to put back the pieces needed to work the 5th and 6th ports. what do i need? i know i need at least an air pump and the mounting bracket for it. do i need the acv? will i need to make any adjustments after putting these pieces on? emissions are not an issue so i dont think i need cats right now, but if i ever move, then i'd like to have it set up where i can just bolt on a cat.

thanks