All you have to do is go to the M5 board. You will see multiple people have dynoed 328-340ish. They are 394-400 at the crank. One guy has an s/c. He's putting almost 500rwhp down. And like 522rwtq. Just insane.

-R-

I'm a Karate Man. Karate men..bruise on the inside. "The difference between oversteer and understeer: oversteer is when the passengers are scared, understeer is when the driver is scared." -Driver Unknown