The G-38 isn't too much power, but it is too much weight for a good flying model.

However, if you lop an inch or two off the front end and move the firewall back, along with adding a landing gear that will permit using the proper size prop, I imagine it could give you some thrills.

If you don't already have the G-38, you would be better off buying a ZDZ-40, if overpowered gassers are your thing.