64 valiant disc brake conversion

There's a bunch of master cylinders that work fine. The later boosters work fine too. The original factory one that year wasn't all that good, plus you had to have a separate reservoir that got in the way. I like the manual disc brake setup myself. It has a better feel for my taste. The calipers don't care which system you use....they work the same.

On my Valiant I just used a 76 Duster disc/drum manual master cylinder and an adjustable proportioning valve. You really don't need power assist....