Sorry, I have to dig this old thread out. I am just wondering, what would the brake biase be if I remove the stock proportioning valve?
I am running wilwood in front and sports brakes at the rear. Car is is used mostly for circuit racing.

I run unions between the lines instead of a brake prop valve setup. Works just fine and it's cheaper...but the wilwood prop valve setup from FM is nice for those rainy days where you don't wanna die.

Big Brake Kit -

He'll sell just the rears. I have a set on the way.