i take it yours is an "early" model engine...e.g. with the rounded valve cover? if so, snatch the lower plenum off an '83 or '84 celica with a 22RE, and tap the missing stud holes onto your head(there's a couple not on the 22R head, but the bosses should be there). the '85 upper plenum will bolt to the lower plenum from the celica and you'll be able to use all the rest of the '85 guts
only thing i think you'd need to add is a knock sensor. i believe you can weld a nut to the passenger engine mount and screw it in there
