Subie drivetrains are breakable...
its a great car, dont get me wrong. My roommate owns one (currently in shop, rear-ended) and I loved to drive it. Only thing is, to really take advantage of the AWD, you have to quickly feather/dump the clutch, which is particularly HORRIBLE for that drivetrain.
Subie owners should know this... they tell you when you buy the car. If I owned one, I'd pick my clutch-abusing battles carefully, since there are only so many times you can push it..
also... the top end of the WRX is its definite weakpoint.. If you're going to win, its going to be later... Whoever above said that the gearing was short, he's exactly right.