i have a turbo gsr in my si making about 300whp at 9.5 psi and all i did was went with some drilled and slotted brembo's with semi metalic brake pads and braided steel lines and it almost stoppes as good as my roomates tt supra with project u's so its pretty damn good i think you are going to need alot more power to require a big break kit but dont get me wrong i would deffinatly sport one if the cash was there