Quote:

I recently swapped disc brakes onto my 70 cuda from a 70 challenger. I dont use a brake booster. I bought a manual disc brake master cylinder from advance auto but ive had trouble with it leaking so what would be a good master cylinder for this? Also Ive kept the stock drum brake proportioning valve. It works good but the pedal is extremely hard. Its hard to push but doesnt stop the car too great. Whats the best way to make the pedal not so hard to push and get better stopping results? The hard pedal doesnt bother me so much but not being able to stop good does :/

To make it work proper you will need a disc prop. valve. As far as a master I would use the stock app., just get a good one. A leaking reman master, let me guess it's a A/1