Thats probably why you got various fitment info for the wheels. I bet they will not fit any other Z32 that is 91+NA or 90+TT with 30mm brakes. Glad they worked out for you.
I ran into the same issues many years ago with my 90 NA. Bought some 18X8 wheels as they test fitted good so I bought them. Got some 30mm calipers and rotors later and they hit the wheel spokes.