My 2017 406 build included a Clay Smith Cam. My 63 Gal has front power disc and stock rear drum brakes. If my RPM's are up and you are coasting off the throttle, the brakes work pretty good. But under most conditions the brake pedal is hard and the car struggles to stop. I have decided I need a electric vacuum booster. I have keyed in on Leed's Black Bandit. https://leedbrakes.com/i-23439163-electric-vacuum-pump-kit-black-bandit-series.html Check out the video. Has anyone used this pump? Any feedback from your similar experience would help.