[Overdriven]

I think you can use any 27mhz Rx, but you have to use an Airtronics crystal. Modules have to be specifically for the M8, M11 has a different number of pins and anything. It airy tonics isnt going to work. Spektrum modules will work but you might want to see if there's anything on HobbyKing or Hobbyparts as far as modules.