I've built a lot of cars for others as well as for myself.... Installing a brake booster is not a good fix for a poorly designed brake system, nor is installing a pump the solution to a low vacuum situation caused by using a cam that is not compatible with that power brake system. Never have seen the need for power brakes on my own stuff, the only brake systems that ever gave me any grief was when a customer insisted on putting the wrong parts on his car.... I much prefer manual brakes with large rotors and 3 or 4 piston calipers over a power system! Lots of places to pinch pennies on a build, but the braking system is certainly not one of them!!!! After many usually futile attempts at explaining proper rotor size and the importance of matching all the brake components to a customer, I would usually let him order whatever he wanted, then settle for an "I told you so" when it didn't work!!!!

Having to add a vacuum pump, increasing the leverage beyond 6:1 on the pedal, and other such things aren't fixes, they're just a patch!