The new wildwood 5 port with adjustable valve built in part number 260-11179 I have a 69 B body Dual diaphragm power booster with 73 spindles and 11.75 rotors pin type calipers off 71 charger master cly from 73 b body 1 1/32 bore I believe. I had the 2 peace E body valve the distribution block with metering valve like doctor diff sells It did not come from him. The rear brakes are locking up in a panic stop. Its rear drum with 7/8th wheel cly. I just got 2 brake pressure gauges. I want to check the pressure at the front caliper and the rear line going to the rear brakes. I want to check them at regular pedal push then slam on the brakes test. Then put in the adjustable Valve and go drive in the rain and dial it IN.