Dumb master cylinder question.
Last evilbay deal i got, i was able to pick up two 3/16" tubing kits with 25' of line each kit with enough correct SAE fittings and gravel guard to plumb each car for $19.99 each, and 2 GM style combination valves for $39.99 each. One for disc/disc, one for disc/drum. Neither car has any remnant of the original brake system except for the pedal, neither one is a valuable numbers matching car, so they are clean slates. Next junkyard trip i will have to get some low brake pressure warning plugs out of a few GM trucks.