The master cylinder I used is from a 1971-1976 Corvette, non-power assist with a 1" bore. It was manufactured by autospecialty/Kelsey-Hayes and is currently on sale at Rock auto for $18.00. Bonus!!
*Just to be clear, I will be plumbing this system tonight. I don't expect any issues, but who ever does? I will post on the outcome. On my project '50 truck I used one of those complete pedal/ power mc assemblies and a disc/drum setup. It plumbed up with no issues. I bought the mc assembly at the Daytona rod run a few years back from one of the vendors who didn't want to haul it back home! I just don't like the look of the pedals on those things. I'm more of an original look with hidden modern performance guy!