Firepower R/C here. I put one of my tanks on a Hangar 9 P-40 and loved it. The whole reason I started making tanks was due to the fact I couldn't buy a Top Flite drop tank anymore. I made mine more scale... good for 60 sized planes. I even have a cargo pod that looks exactly like a 75 gallon drop tank, but will dispense a payload upon release or impact with the ground. Let me know via pm if I may be of service.