Quick question, does anyone make a bracket for an Escort Cosworth to allow AP 4 pots (Cp 5200's) to be used as rear callipers, but leaving the original ford callipers in place to make use of the mechanical handbrake facitily? What size rotors would be good to compliment the fronts? (6 pots on 362's) 330's to keep the balance right? . I don't really want to mess about fitting a bias valve unless I have to.