7/8 bore master for 73+ a body discs?

We're running a '76 A-body m/c in my son's '68 Dart. I believe it has a .95 diameter piston, and he likes the feel. With the smaller piston, you get a higher assist ratio, but the tradeoff is the pedal will move farther. Not sure how much travel you'll get, but I think it should be acceptable.