I built 2 of these back in a day. The first was powered by a Saito 45. Some would say it may have been a bit underpowered but I loved that plane. It was very docile on landing but was mildly aerobatic. Did everything I wanted it to do. The second one was powered by a Supertigre .40. Still not overpowered but again was a great plane. If I found a kit for $10 I would build a 3rd one. The OS 46 should be great and if you have a Saito 56 laying around that would be great as well. Look forward to seeing the completed model.