hi mate good project , going back a bit you were asking about the intercooler , we used to rally a 3 dr back in the 90 s and we had a intercooler like that in ours , it was standard width but wider in the depth as if someone had welded two together, someone sugested it was gpa one but i wasnt sure at time looked too good for a home build , ive got a mcrea motorsport red car that i want to get started on but havent a garage to work in yet but we will get a start soon