Let me know when your ready for the Tornado Buck, I will just about give it away to someone that can finish it and put it in the air. That is why I bought the AMT AT280, for the Tornado. Either the 280 or the 400 will go in a converted Byron F-15 (another big monster at 105" long) Take care and Fly staright.
Topgun, I would buy the manual starbox from AMT. It does not cost much more than the GSU I checked out on your link and it is guaranteed to work with no head scratching. I think the current price is somewhere around $185.00. Hope it works out and good flying.