I'm working on compiling parts to replace the little 9" drums on my Barracuda with a set of disc brakes with 11.75" rotors and pin type single piston calipers. The plan for the Barracuda is to have a nice street car and to also do some autocross. I was looking over Doctor Diff website and stumbled on the Viper Caliper mounting kit. Now both setups would be using the 11.75" rotor. Would there actually be a noticeable difference between the single piston calipers and the Viper 4 piston calipers with the same size rotor. The rotor can only dissipate so much heat before there is brake fade.