Thanks for all of the tips. Miami--that's great information, just the kind of stuff I need. I do have a saito 56 also that I could put on it instead. Would you recommend this engine instead? The only two stroke I have is an evo .46 (which is a hot little motor), but it weighs out exactly the same as the saito .56, so I might as well go with the fs. I have the saito 100 on the way, but I could wait and put it into my next bird (which will by all likely hood be a 60 sized p51). I ordered monocote to match the picture on the box, because I really like the red and white scheme. However, now that I've seen a few in chrome, I'm thinking of going with that look instead, with a chrome spinner. Either way (red or chrome), I'll probably go with the chrome spinner (unless weight doesn't allow it). I'd hate to have to add ounces of weight in the tail just to balance out a spinner!