The airfoil is not that close to any used on a warbird but where this is a higher performance airplane I think it will be an interesting experiment. And if the mods work out well for this airplane I can apply them to the new warbirds I intend to build. I had read your post on your SSE build it and others where the reason I bought the kit to start with. Overall it is a well behaved, yet a stellar performer, while still fairly docile if that is what you want. The problem I can not build just a straight kit, I have to try and expand on what it already can do, or enhance the performance if possible. As far as ARF's I just don't feel right flying a plane that I don't build, besides building is as much if not more fun that flying to me anyhow. And lord knows the way I fly R/C I need to enjoy building them or buying lots of ARF's ...