Talk to John Y. He has had stock, Skyline and Brembo kits in that order. Skyline generally won't reduce braking distance. However, under repeated use there is less fade, so it's OK for track events where you want to keep stock rims and don't want to break the bank. Remember youalso have the Porsche kit to fit the stock wheels, however it is almost as expensive as a Brembo kit.