I now have Funke radio modules available. These ones have a 3d printed cover for the electronics however the main structure that stabilises the connectors is cnc machined aluminium.

It has all the same features as my Trig modules, except that it runs off the aircraft bus directly so the power supply is good for 6 to 60 volts. It's very compact too, adding only 28mm to the existing connector length. You can connect an EFIS or Autopilot etc.. to the spare serial port and only the required radio control packets are filtered and sent to the Funke radio.

For anyone interested they are available here