Memphisbelle I just completed building my Wing B-25 And I put Mag. 52 fourstrokers on it haven't flown it yet waiting for spring. Will take it to the sod farm up in Davenport. I really feal that the 52s should handle it quite well for how I want to fly it. Basically up and into a flight pattern and then a low pass with bay doors open and then close and extend gear and land. Don't have any plans on doing any whoop-di doo stuff just fly her and then land should last quite a while this way also have developed my own mechanical brake system and aircooler fins that work with the throttle