I don't have the right program it seems to run Feet's brake program, so I will ask you guys. Here is what I have installed in a 71 e body, auto (will be 42RH), 318 (going to rebuild close to junyard jewel power level (300+ hp)), power steering, and manual brakes (factory brake pedal for that car):

Front: 11 3/4" front disc upgrade from manual 4 wheel drum (followed mopar action upgrade, single piston pin factory style calipers)

Rear: 10" factory drums

Currently installed 1 1/8" aluminum m/c. I was going to go for hydroboost to use with the bigger m/c but figure I don't need it. Is this m/c too big and if so, what size should I use? I don't want to have to stand on the pedal to stop it and would like a nice "modern" braking action. Should I go with 15/16"?

Thanks