Yes, I believe the pads are too hard....they seem to be for track work not street and autocross. Problem is the configuration of the pads seems only to be available in such racing compounds. I have had no luck so far in finding someone who can make a set for me. I think I am going to buy an all new set of calipers designed to take the most common GM pad out there.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.