Other single piston brakes I have had, (late seventies corvettes) had bad pedal preasure or leaking piston seals? the AMX may be better, the 1972 javelin seemed to have good brakes before storage.
The 73 has drums up front, my 68 chevelle had the same 4 drum set up, and I want to up date this car if I can.
I have not been able to find the bake adapter that the caliper mounts to yet. I will be happy to get what ever I can get to tell the truth.