I'm changing my 64 dodge truck to front disc brakes and leaving the rears drums. Since I have a single MC, it is being updated to a dual MC also. The system is NON POWER BRAKES. I want to install a proportioning valve (not an adjustable valve). My question is... is a proportioning valve for power brakes/ the same as one for non power brakes ? I see that summit sells a universal proportioning valve... but does not state if it can be used on a non power system. Any know about this .. ?