Manual 15/16" bore master cylinder makes your manual brakes work real nice, vs the larger bore factory manual masters that have a hard pushing pedal, short stroke, and poor brake control.
Do you have a part number for that master cylinder? When I look on Rock Auto, I don't see one that list the bore size and it sure sounds like I need that one. My brakes are all new, drums all the way around and the pedal is quite hard to push. Thx!
