Which master cylinder for 4 wheel disk brakes

Eric I ran 76 (2.75) A body front discs with aftermarket (ceramic?) pads and 10" BBP 7&1/4 drum brakes in the rear (2&1/4"?) on a 65 dart with the OE splitter/no proportioning and a 1&1/8" alum dual MC & it stopped flawless and no excessive front pad wear. Pedal effort was fine (& I ain't that strong). the rears would lock up first on a panic stop but it rarely came to that if I kept my eyes off of the sidewalk.