Pete, What is the recommended size for the rear rotors for the Cobra set up? Can I use the Bear 13" rotors that are weirdly shaped with the sloping shaped hubs? I am thinking of using a 1/4 turn valve in the rear brake line for a parking brake? What size master brake cylinder to use, my '96 is a 1 1/16th. Proportioning valve needed? or modify the block one on the car?