Originally Posted by madkayaker
STI. If it's going to be making 400-500hp (and you want it somewhat reliable), the STI drivetrain will be much happier than the wrx drivetrain.
It really depends.. Ppg gears would be happier with that kind of power than the sti 6 speed. But then again the 6 speed would probably be fine and you'd have to pay out the money for a big brake kit and Ppg transmission which would make up the price difference between the two anyways. But maybe you'd want an even bigger brake kit than the sti in which case wrx would be cost effective again...
Plus with sti you get dccd and lsds stock. I'd probably go sti for that sort of power.