The kit we used on our 64 Plymouth was from an aftermarket company (on ebag) that just repackaged stock components. I believe they were from a 74 Dart; single piston calipers, stock rotors, etc. The 64 Dodge (in sig picture) has 4-piston Aerospace brakes. On the Plymouth the late model aluminum/plastic master cylinder from Ehrenberg(sp?) worked great; just redrilled the firewall and metal plate (different master cylinder shown in pic).