Originally Posted by Supraru
Take your car on a real track for more then a couple laps. You'll immediately wish you had brembos. Now to the trans. I broke mine twice in my 2700 lb Rs with lgt gears which is the same gears as the current wrx. Once was rely with zero abuse. Second was on its first semi hard launch. Had maybe slightly less then 350 whp.
Sounds like you need to learn to drive.
Also, the issue with the WRX brakes isn't so much the calipers as it is the pads and fluid. The WRX has street pads with an optimal operating temperature far below temperatures that are reached during laps on a road course. Changing pads and fluids has a much bigger impact than increasing the heat capacity of the calipers.
His point is that if you aren't going for big power where the beefy sti 6 speed would truly be beneficial, then it's far cheaper to get a WRX with its beefed up transmission fine for 350 wtq and just upgrade the brakes. You could buy a set of brembos or stoptechs or something if you're feeling ambitious but you would be fine doing a cheap upgrade with just track pads and brake fluid that won't boil.
The brakes are without a doubt the weak point of the WRX. The willow spring course was noted as not causing the WRX brakes to fade and so the time we see is essentially what the WRX is capable of if its brakes are upgraded. Personally I think the WRX is slugging it out with competitors far above its pay grade even with its soft stock suspension and terrible factory tune. I'd love to see how a WRX with $2k in modifications performs on the same course.