Okay, that is what I needed.
I have a 9CAP PCM and it is compatible with all FM and PCM(good luck finding one of these) receivers, as well as the servos that don't require individual programming. The hard part will be finding crystal sets for them since crystals are getting harder and harder to find. What you might be better off doing is seeing if you can find a DSM module for your transmitter(if it's compatible) and buy DSM receivers so that you can just buy a new transmitter when needed and still have all useable receivers. One other thing, you probably won't be able to use the "S Bus" servos. They have to be programmed for a specific application and are also very expensive. My surface radio is capable of using them but I just can't justify the cost at this point.