I'm actually doing a TF P-47 Kit myself and am going the gas route. Still up in the air about my power choice but Iam looking at either a JBA15cc or a DLE 20cc.. price is near to the same, availability of a pitts on one or the other may sell me.. I would like to get the thing in glass before I pull the trigger on an engine, I think its prudent of myself to wait and see how much the thing weighs incase Ibuilt too heavy..