I've heard the only difference between the calipers on the Mark VII (which is a fox body like the mustang) is that the lincoln ones have larger pistons in the calipers and that they bolt on easily. The diameter of the rotors is the same (i believe 11 inches). This brings up an interesting idea, using the Mark VII rotors (5 lug) to convert from 4 lug. I don't think the spindle should be any different from the Mark VII and the mustang, but i may be wrong.
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'84 Mustang 5.0 LX
My car