Hi cubfloater, I put a Magnum 91fs in my plane.
I still don't have a lot of flights on it, but it flies real nice and I like it a lot, I flew it last Saturday. It has very axial rolls and instead of really stalling it just starts losing altitude. I am still trying to figure out how to build planes that come in at the manufacturer's projected weight. So far all of my planes weigh significantly more than that. I have seen people post 7.5 - 8 lbs finished weight for Hog bipes and mine weighs 10 lbs. At that weight the 91fs flies it fine and I don't feel under powered but I find myself wanting more LOL