I’m just gona add to this and say that this is true but only for the 26mm version of z32 brakes.
The 30mm version will not clear any stock s13 wheel unless u use a small spacer.
m running 8mm or 5/16 inch spacer in the rear I would not go more then this. I know some people say 5mm is max for stock studs but I haven’t had a problem yet, so far about 10 000 street kms on them and 2 track days. Hope this helps.