Nightwolf, Shaggy wasnt trying to get all pissy with you. The information is out there. Currently, the highest hp tour is making 401 whp from a 2.5L turbo. Yes the drivetrain is holding up. At a bare minimum youll need a torsen or quaife and an upgraded clutch. Its all been posted in the dyno and drag and forced induction forum.
Btw, im making probably about 330 whp with my daily 10 psi setting, and my car is holding up nicely.