hey guys i have a durplane areobat 40 with a o.s 46fx engine in it...I'm also building a greatplanes p-51d the 40 size...what i plan to do is move the 46fx over to the p-51 but this leave me with one plane without a motor...I'm thinking about buying a o.s 50sx and placing it in my areobat 40....i would appreciate and views,ideas, and what you might do if your in my shoes...oh yes one more thing i plan to stay in the 40 size of planes...i thinking about a 3d type plane in the future...thanks and have a good day

pete