Front calipers excluding B13/B14 chassis but including P10/P11 chassis:
When you you mount a FWD caliper onto a RWD car you gain a few millimeter so you end up with pad overhang.
When you try and mount RWD calipers onto a P10/P11 chassis it wont fit becasue the mounting tabs are different and teh only way to make them fit would be to lessen the diameter of teh rotor itself a few millimeters.
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