Proportioning valve after conversion

It might be just me, but I want the rears to skid *just* slightly ahead of the fronts. Not the other way around. Loose front traction = loose steering control.

A drag race car's use throws a serious wrinkle in the works. With that tire combo the prop valve may actually be needed in the front circuit as with those skinny front tires it is much easier to have too much front brake than too much rear brake..