Hello, I am restarting my project after lots of waiting. Recap: I am replacing the drum brakes on the front of 1965 Plymouth Valiant 225 with disc. So I can drive on the freeway and not be terrified. I am using 4 piston system off of a 1972 Dodge Dart. Why the 4 piston system? Because I can keep the original bolt pattern 5X4". I do need to buy new 14 or 15 inch rims to accommodate. I am using a later model single peace proportioning valve because they work better and I don't have to do much plumbing, just two new lines to the MC. 1. I found a local shop here in LA that turned the rotors and replaced the bearings on the used parts (Dart 1972). 2. I recently ordered a "Chrysler Mopar adjustable master cylinder push rod A/B body" from a seller called doctordiff1 on eBay. $50. This was a good find. 3. I have not decided which Master Cylinder (MC36406 or MC36426) to go with... but I will make that decision and let you know. I am also cheating. I found a mechanic that will do the swap for me. I live in an apartment and don't have the room. Today we are going to lift the car and confirm whell sizes for ordering. Cheers, Mike