I need a brake proportioning valve but nobody in town has the one I need. Anyone know of a ram truck valve that would work on a 1992 b350 van with front disc rear and drum brakes? Its a 5.9l and I am pretty sure no abs. I have 2 junkyards but no early 90's b350's. Mine has 7/16 and 9/16 inlets and two 3/8 outlets for front and a 9/16 outlet for the rear. I am not opposed to using some adapters if the inlet or outlet lines are different sizes. I just need a two inlet 3 outlet pv that is acceptable on this vehicle asap.

THANKS IN ADVANCE FOR ANY HELP