My HPF Feramic has stood up to everything that was thrown at it, whether it was street, dyno or dragstrip and as stated in my earlier post, the car was a 10 sec. car trapping in the mid to high 130's.
I've heard stories about the material eating away at the flywheel (stock) until the point where it would fuse itself to it, but with all things in life, it's happened to some and not to others.
btw - kirk, I have the ACT 3500lb pressure plate, and I think it's the 3550 lb pressure plate for the bronze kit!!