The bottom master/booster looks just like the one in my 1973 Dart.
It was,a untouched low mile local bought new old man's car, before my friend got it.
I also pulled plenty off 73 up A Body cars when getting disc brake spindles at the U Pull It.

[img]https://i234.photobucket.com/albums/ee87/fast340six/sig%20pics/2840886-340SIX-1.jpg[/img]
VP of the MPM in New Orleans
73 Dart Sport 340/ 70 challenger vert. That may still get built, If I live long enough