I have some R32 gtr calipers for sale, they are alot bigger than TT z32 calipers and accept alot bigger rotors. They use a 296x 32 rotor, where tt z32 is 280. These bolt right up and have been rebuilt few thousand miles ago. They have brake pads that'll come with them that have good meat on them as well. These are a nice clean bigger oem setup.If needing pads or have to rebuild they use the same hardware as z32 calipers.