I am also a "Cub guy" who has never seen that model. It is a modern lazer cut, semi scale ARF, not a kit build. With a 71" wingspan I feel any good 40 size 2 stroke glow, or 50 to 60 size 4 stroke glow engine will fly it well. I would install an OS 52 4 stroke or an OS 46 LA mounted over on it's side (not inverted). I had a 71" World Models J-3 with an OS 46 LA on it's side with a pitts muffler that flew very well (sold it at Perry last year). It's a good looking Cub, go over it with extra glue where needed, power it and fly it. Enjoy !