I'm running 05+ mustang 12.5 disc in the front and 98 explorer disc in the rear. So do I want the newer disc/drum valve installed or use my old drum/drum valve? I figure since both front and back are disc I should use the drum/ drum porportion valve.?
I have granada fronts and 98 mustang rears and plan to use a mustang prop valve and ranger 4 wheel disc master cylinder.
Get an adjustable one from Summit or Rod & Custom. I have one if you want to come over and look at it.
if your rear tires are bigger than your front...you don't need one... i've been running...disc/disc master...no prop. valve...w/no issues...