Cordoba big brakes on dippy M body spindles

The 11.75" caliper brackets, rotors and calipers will all fit fine on the F/M/J spindles, no problem. So if your Diplomat donor is a M body you're good to go. That's exactly what I'm running on my Challenger. And the Diplomat calipers should be a 2.75" piston bore, so they're the same as the Cordoba calipers. Only the A-bodies got the smaller piston for the 73+ calipers, they were 2.6". Everything else was 2.75" except for C body and truck stuff, and that stuff doesn't interchange anyway. I left the original calipers on my Challenger when I did the swap, same piston diameter.