What he's showing you is the correct Chrysler disc brake proportioning valve, mounted in the correct stock location. You need nothing else when using that. The valves these other guys are talking about adding into the rear line are aftermarket pieces that were not installed from the factory. If you use the factory piece, like @Oldmanmopar showed you, you do not need the valve in the rear line, because it IS the proportioning valve AND distribution block in one unit. I just got done putting a dual reservoir master cylinder and disc brake proportioning valve on my Valiant getting ready to install front disc brakes. Using the factory stuff made it very simple. Either way will work.
