I've just started a brake upgrade and I bought a set of 4Piston 30mm calipers off of a 1990 JDM Nissan Skyline GTS-T Calipers. I got these from Puerto Rico for a very good price. I didnt know if they would fit my car but all I know is that they fit around 30mm rotors. Does anyone know if they would fit my stock size rotors? Thanks

 

From the infor you gave no one ca give you an answer. What size are they, 30mm is the width, but what's the diameter? Our fronts are 11" and the rears are just a tad smaller. You'll probably need custom caliper brackets too.

 

They will NOT fit your stock sized rotors.
1) mounting dimensions are different
2) you could buy some 300z rotors for the 30mm calipers but you still need to shave the rotor's diameter down

 

where or who you bough the calipers from i'm from puerto rico