master cylinder bore

My Dart has four wheel disks and I ran the factory ( I think 7/8") until it started leaking. It was replaced with a 1 1 /32" and I hated it, the pedal was like pushing on a concrete floor and the car didn't stop as well. So I replaced it with a Dr Diffs 15/16" mc, it stops a ton better but not as well as the factory 7/8" mc. I wish the good doc made one in 7/8".