Tom, as long as the tank neck is sticking into the firewall in the center of the motor mount go have fun with it. The tank is in a good position for the 46 engine. Thousands of them flying, no problems. IMHO one of the best all around trainers ever produced. Lost one the other day in a mid air. I say lost, not really, just part of the right wing and all the rear right horizontal stab gone. Still flew pretty good tho. Didn't get any pics of it when it happened so I had to take it off and fly around a bit to get some. I will always keep something like this in the hanger just to go out and have a lazy day with..........

Ed M>