I used an Exedy twin-disc for a Tremec T56 on a Z06 with heads/cam/nitrous. It was making over 500 rwhp and 600 rwtq and never had any problems with the cluch. Surprisingly, it was a very streetable clutch and probably more lady-friendly that other clutches. I'm not sure if it'll work for your tranny, though. You'll have to check on that.