Next in my list of glow conversions of cool lekkie pylon racers will be the .15 machine.
The pipe is on the way or I would have included the picture.
Profi "hybrid" engine - 2014 TOP F2A top end, with Junior bottom end - the difference being regular ball bearings on this versus direct inner race on the crank. The net effect would be somewhere slightly south of the rather $lofty TOP F2A engine, and north of the Junior F2A engine in performance. I have a head button for 10% nitro fuel which I will definitely use. Prop is an Eliminator 3x6 (or 1/2 of a 6x6) with integral brass counterweight designed for these engines.
Airframe? One of a short list of models between 160 and 210 sq inch.