Built one of these last year, or was that the year before, hmmm losing track of time. I put a saito .65 on it and it was a little underpowered. I have put a saito .82 in it but haven't flown it yet. The .82 was actually 3 onces lighter then the .65 and should be a lot of fun. I really like the plane, was fun to build and very fun to fly.