NEED 1973-76 Disc Brake Distribution /Proportioning Valve

Thanks. We tried the combined booster and m/c from a 76 Dart today with little improvement. Front brakes still do not want to grab much. Ordered the Inline distribution/combination block today per your suggestion (I have the 71-72 "pin" style B/E body calipers).
I'll let you know what happens.
Bill