I know that my thinking can get a bit screwed up at times. I guess what I'm trying to do is pick an engine that I can use on more than one size aircraft. I look at the Funtana which is called a 40 size. They fly it with anything from a .46FX to a .91 four stroke. And I even larger I think. That plane is extremely light, I've felt the fuse in a LHS. I've got some cash that's burning a hole in my pocket and can't make up my mind which engine to get. I want to get something that I can replace the 46fx on my spad deb, and maybe put on a 60 size down the road. Or, maybe the H9 Funtana, it's such a pretty little thing.lol I'm leaning toward the FA 80 Saito, or going cheap and getting the Magnum 80 or 91. Oops, gotta go, work calling. will get back to this later