RE: Top Flite Staggerwing
Size wise, the evo 7-35 fits fine. I'm more concerned about it having enough power to adequately fly the plane. It seems to line up prop size wise with the OS 1.60 and other similar engines. The spec'd RPM is somewhat lower on the evo. I'm don't know how fast the evo actually turns say an 18x8 compared to the OS. I really hope the evo does work out, I think it would be slick on the staggerwing.
Joel