as i've said before, s14/15 rack will fit and is roughly 50mm narrower than the auto stagea cradle and is pretty much identicle width to a factory manual stagea cradle. you have to use an s14 turbo subframe though - no hicas either
as you are aware you can run lower offsets with them fitted and personally, i'd grab those gt-c's from thuy that i posted in your other thread (you were concerned about rears poking)