Well, I built a motor without taking in consideration for the powered brakes that I have currently installed and I am now forced to look at my options. Ive considered buying a electric vacuum pump but I am concerned on where to mount it and its reliability. So I am now looking into converting it to manual brakes. Now, this task doesnt seem to difficult if I had 4 wheel drums, but I do not. I have disc brakes up front and drums in rear. Can anyone suggest a master cylinder that will work for this setup? This is for my 53 chevy, nova front clip, and 79 8.5 camaro rear end. Thanks!