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Keep in mind that less effort means more travel ... you still have to move the same amount of fluid !!! That said, the most common m/c for a brake conversion seems to be the 1-1/32".


A lot depends on caliper piston size as well. The least pedal effort will be achieved with a small m/c bore and a large caliper piston. Determine the size of your pistons versus the mid-70's Mopar calipers. If yours are the same or larger then the 1-1/32" m/c should be fine but if yours are smaller then you'll want to go smaller on the m/c as well.



I believe I have 4 piston calipers, if I remember correct. Should be bigger than factory. Do you know what the bore size was of the mid-70s Mopar MC's?