Quote:

Was your car originally manual or PB? Reason I ask is the PB pedal linkage setup gives less leverage. If you are running the PB pedal linkage without booster that's your first and biggest problem



This is incorrect. The actual pedal and linkage is the same for both power and manual brakes. The leverage change is accomplished with a mechanism that is actually part of the booster assembly (if you notice, the booster rod is actually higher up on the firewall than the manual rod - as a result of this mechanism). If you were to try to use that mechanism with a manual m/c it wouldn't mount properly and I doubt you'd find a pushrod to fit.