Piledrive

I have a Byron Original Pits that is set up with old Futaba 7 chanel FM circa 1980-85. Power is a Tartan Twin. It was slightly damaged on its last flight (I never had nerve enough to take-off and land myself) and partly disassembled. Now I can't remember how the engine was set up. (gas) Question, can anyone provide the factory set-up for Gas? Does it use a module between the mag. and the plugs? Would it be easier to convert to Glo?
Lost in a Fog