Any of you guys ever changed out a Brake Booster on your Fox bodied Mustang? I have Cobra Calipers (PBR) front (13"and rear (11"with cross-frilled/slotted rotors and Hawk Pads. However I do not feel make braking is adequate. I am considering changing the Booster out with a Cobra unit if it will fit. However I do not know if in fact it will fit. Anyone ever done this before? Thanks!