If you mean a Thunder Tiger .46? Or any other .46 for that matter, a 1/12 scale GP combat plane would be rediculously overpowered and nose heavy. I'm thinking virtually unflyable. Should look pretty scary though. Be sure to brandish it menacingly when you go to the field. If you're brave enough to test fly I'm betting you get one very short, but highly entertaining go round with a distinct sound at the end, SPLAT!

If you're serious about gearing up a combat plane for competition, remember the class engine size limits that are applicable.

2610 used to be a .26 size engine but a recent stupid (IMHO) rules change increased that to .30. I don't know when the change takes effect and frankly don't care. The class was already way too fast in most people's estimation and more horsepower should just about finish the job of killing it off.

2548 requires a .25 size motor which is plenty of zip for that size plane.

If you're not serious, go for it, have fun, just be careful and make sure no one puts an eye out! Good luck!