Quote: ON MY 70 challenger, originally drums, i have the 73a body set up using the stock distribution block and an adjustable valve in the rear line. works exactly the same as my 74 cuda that has all stock disk brakes
Same here, I'd look into the plumbing or booster before spending money on a new proportioning valve. I actually didn't even add the adjustable valve on the rears, just changed over to the smaller 7/8" wheel cylinders.
