Looks like you got a pretty good deal! Nice Plane, and a good flyer. Replace the stock landing gear, and brace the tail, and all will be great! Mine has an O.S .46AX. It flys pretty good with that engine, and produces nice power, but a little more power and a little bigger would not hurt a thing! Here is a photo of mine. The Tail is braced with 4-40 rods, and the landing gear has been replaced with better grade aluminum gear.