Thanks for your help guys. It seems fuelproofing, and reinforcing the firewall, landing gear, and rear stabilizer need a some attention. One last question guys then I will leave u alone. As I stated above I will be using a Saito 91. I would like to mount it on its side or inverted for a little cleaner look. Would this cause any problems as far as tuning, fuel tank placement, engine mounts, idle performance? Also what would be a good prop brand and size to start with? Not looking for speed, just something with good takeoff and landing performance. Thanks again guys.