i got defected once for having a twin turbo gtst but they took the compressor housing as one turbo and the exhaust housing for the second turbo then they ticked every box apart from suspension and red sticked it to be towed home
ksport brake kit start 4 piston calpier and go up to 12piston rotors start at 286 mm and go up to 410mm see link for more details
http://www.k-sportracing.com/