Please measure and post your results. I'm curious.
Stazi, I had this ideal for awhile. If contours are equipped with ABS, then we can eliminate the prop valve(some are built-in to the ABS module). This way the knee point isn't static but dynamic. It truely would be fully dependent on the dynamic weight transfer and available traction at each axle. This way we extract the max efficiency from the brake system.
This assumes the rears are corrected sized to be in the ball park of factory weight balance.