I have a question on getting the rear brakes on my '94 GT upgraded to the larger Cobra. I plan to use the rear calipers from my GT since I understand they are just about the same as the Cobra calipers. Is there a bracket that moves the GT's calipers out farther so the larger Cobra rotors fit? Are the rear Cobra rotors vented? If I use the GT caliper I think I will need the thinner brake pads from the Cobra to mate correctly with the vented rotors. I see they offer a complete kit from Ford Racing however I want to use my calipers to save some costs. Anyone been down this path before? Thanks for the help.