Two proportioning valves or one - what was I thinking?

[68Malibu383]

So, I have an '81 Camaro that had factory proportioning valve, factory master and factory booster with 4 wheel Wilwood disc brakes. Previous owner installed a Wilwood adjustable for the rear brakes. I've since changed the four discs to C6 Z51 fronts and the LS1 rear brakes, S10 master cylinder and Tuff Stuff dual diaphragm 9" booster. Thinking the two proportioning valves would cause a problem, I bought an new factory style unit and gutted it, while retaining the Wilwood adjuster.



I've not driven the car as I've been busy replacing floor pans, suspension, heater core, etc, etc. Anyway, I now realize there is no fluid separation between front and rear brakes, so, if a have a pressure failure on the rear, for example, I would also loose front brakes.

Should I install a replacement factory prop valve and keep the Willwood or eliminate the Wilwood or somehow separate the front and rear fluid?