Proportioning valve -and disk brake upgrade, please help

67Dart273 said
Your "new" valve SHOULD NOT BE the same as your 72 "all drum" "device" take a second, close GOOD look at what your 72 has.

Yep, you are right again! I'm embarrassed that the correct advice was "look closer." I have the distribution block which is shaped differently. :oops:

Thanks for your quick and reliable help! I bought the rebuild kit and will swap in the proportioning valve after cleaning it up.