proportioning valve

So I was forced to switch to disc brakes and I wasn't ready yet. But the situation called for it. I have a 76 dart. I took the disc from a swinger that looked close in years. I should ha EA ran a VIN decided and checked o well. UCA and lca looked the same on my drum set up. I got everything I think but the proportioning valve as it wasn't there.
I got the rotors calipers and spindles. I order new hose and have the rest of the bearing coming Tuesday.
If anything else I need and you have it let me know