From my experience...don't use the old M/C. Go with the dual resivoir master. I've heard the firewall on the trucks don't hold-up well for the M/C. They sell brackets to place the master on the frame...using your stock pedal.
I went with a power unit (on the frame) all new lines, etc. I'm running a stock front end with a camaro rear. I didn't need any proportioning valving. I am very happy with the set-up AND the piece of mind.
