I used two of those magnums in a couple airplanes in mine and loved them.. they really flew the snot out of my sport planes. If i HAD to go back to glow, this is one engine I would always keep on my benchstock, just in case.. You get a thumbs up from me on this engine.. I had no trouble tuning it the same as I tuned an O.S., I say go for it, you won't be let down.