Yes, if you don't mind pushing harder on the pedals than without a power booster. Most race cars have manual brakes not power brakes. I have drag raced, road raced and circle tracked and all of my cars with the exception of one circle car that was a pure stock had manual brakes. I prefer the road feel and feed back from manual brakes.
With manual brakes if you want less pedal effort you go with a smaller master cylinder but you will have more pedal travel. Or you can leave master cylinder alone and put bigger piston calipers on and achieve the same thing.
A braking system is just a hydraulic system, the smaller you make the pump in area(master cylinder) and the bigger you make the cylinder in area (wheel or caliper piston) the more power you will have. But you sacrifice movement when you do this you have to move the pump farther or more to move the same amount of fluid.
It's just like a ring & pinion, the smaller the number of pinion gear teeth you have and the higher number of ring gear teeth you have the more power you have at the driveline but with the expense of more revolutions to achieve the same speed.
