Any one know how involved changing from regular master cylinder to a master/power booster combination is on 72 vette, if it can be done at all.Regular braking just doesn't stop the car like I would like,Bob.
Purchase the '72 AIM and take a look at the installation diagrams of the factory power brake system (option J50). Short list: you will need an additional hole in the firewall, the booster, and the PB master cylinder.