That looks almost the same as the valve I bought about seven years ago, it's bee a paper weight ever since. l also bought a replacement after market disc set up, rotors, bearings, seals, splash shields, brackets, calipers, pads, etc. I used the rotors, nothing else would fit. Even the pads and the dust cap to go over the spindle nut are junk. Even the two cotter pins were the wrong size.
l also have front disc rear drums, l use a GM single piston set up off a 69 Camaro, just replaced the rotors and pads. My master cylinder is a manual non power drum drum unit, l couldn't get the proportioning valve to fit so l just run without one.
l think the threads in my valve are the same as the one in the diagram you posted, if it works for you you can have it, not doing me any good, but might be the same as the one you already have.
