[treveiger]

I looked online and it seems the 71-79 brake mc are the same. The prop valve would have to work on a 71 brakes wouldnt it? Did the manual breaks have different prop valves than the power breaks? I have a power break set up with some kind of a valve but idk if itd work. It doesnt look like the one above. Its off a 71-72 gmc c15.