Are you interested in the airplane? I doubt you'll find much comparison data for this engine/prop combination. I used to own this plane and flew it for 5 yrs. I can tell you that it flies so nice, you won't really care how fast it goes. It's one of the lightest ones built, and can be slowed down a little more than other RV's. The builder used to fly off a 700ft strip of grass. Not many other planes you can get for the money that will land this short and cruise at 150 mph. If that's not fast enough for you, just realize that no matter how fast you're going, you always want to go a little faster.
