I don't know why in the world they use a vacuum booster on these cars in the first place. SPF can just send me a car and I will design two systems one for the basic cruiser/weekend warrior and one for the racer. I know a former F1 driver that would enjoy filling the left seat and much will change. Of course, I get to keep the car for my time and expense
For the rest of you, listen to Dennis... the guy knows what he is talking about.... and I would suspect he is on the right course.