pretty tough choice you got to make.

i know a guy who's running zex kit on his gs-r with stock AEM brake rotor upgrade kit, he was pretty happy with what he paid for, and he's still running 15" stock rims too whichever fullfills your need for how fast you wanna go.. if you are not too concerned with budget, there are still plenty of light weight 17" if you care to look around..

later..