interior ducting is very important. BUT. for those of us that have the Boomerangs. I have a boomer XL and it is truly amazing how the turbine gets much air at all, with the bulheads, fuel tanks and other junk in it's way, the air is very dirty by the time it gets to the turbine. but with a P-120, she still goes. but I guess it would go a bit fast and preform better if it had clean air, or better ducting.



Mark