Ken thank you for responding. I was curious about where to put the ignition, I don't know if the plug wire is long enough to reach past the fuel tank or if it is easily replaceable. I was actually considering putting the module beside the tank, using a smaller tank due to the lower fuel consumption of the gasoline vs glow fuel. My biggest question is if the power of the gas engine (Saito FG 14C) is comparable to the same size glow (Saito 82 AAC). I do realize the gas would have the added weight of the ignition and battery.
I am leaning towards one of the Saito 82 size, just haven't decided which one. I would prefer the gas, but don't want to underpower my airplane. The YS70 is very tempting but I think it would be more costly in the long run due to its fuel requirement-I still haven't ruled it out.