BradSD...

You'll be disappointed with the 46. Your STG-90 would power the plane pretty good.

The plane will fly with a 46 but I don't think it will hover. It certainly won't at my elevation. Even though you put the bigger engine on you won't actually be overpowered. You'll be about right. But you will have to exercise throttle management. This plane does not want to fly fast. I think that is why Great Planes states a smaller engine size. They don't want the plane overspeeded. Just don't go full throttle on the level or down lines.

You'll love the plane and the forum. Welcome!

Thanks
Barry