They told me they are from a '95 TT JDM, but they look different than all of the other Z32 calipers I've seen. I found some info that they are possibly Skyline M-spec and indeed take the 280X30mm rotor. Just thought you guys could help. Here is a thread link: [ http://zilvia.net/f/tech-talk/100264-brake-gurus-r32-caliper-s-2.html ]
Is it a bad idea to go from the cast iron caliper to the aluminum?