Hello, I have a 92 camaro with the 2:73 rear with drums. I purchased a 94 Trans am rear with disc brakes, posi, and aftermarket 3:73 gears. Anyways I have been running some searches and haven’t gotten a clear pictures on this. What prop valve do I need to use because I am switching to disc from drum. Do I use the valve off the 94? Aftermarket? I have been reading up on the parking brake cable problem and figured that out, and I think it is a pretty straight forward project other then getting the brakes to function properly . Thanks Chris