Which "drag race" master cylinder?

I have the 73 up A body disc brake setup on my 64 Sport Fury. Upgraded to the larger 11 3/4 rotor. Didn't stop very well. Went to the 76 up Aspen calipers, which are larger than the A body. Can't remember the exact size. No brakes with a 15/16 bore. Went to a 1 1/32 bore MC. Stopped much better. So calipers bore size is important. I also went with smaller bore rear wheel cylinders. That helped too. Sometimes you have to do a little trial and error.