I'd suggest, depending on what driveline loss you'd like to quote, that I'm over 300Hp easily at the fly and I am using a stock Sti clutch, Sti pressure plate and flywheel on the 6 speed.

Taken it to the drags, track and Racewars and I have had no issues of any type. That's in a car with a curb weight greater than a Sti.

(Edit - this is a WRX Sti clutch which has a greater diameter than the original Liberty supplied clutch, hence, I have an Sti diameter flywheel).

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[COLOR=Black]Liberty GT Spec B tuned 240 HP & 372 Nm at the hubs.[/COLOR] "Instead of banning high performance cars - ban low performance drivers"