Ray:
I have sent Tony an e-mail asking for his assistance in identifying which version is in the photo. In looking at the Challenge II, I believe that the plane I had was not a 2. The plane was designed for an inverted engine with a tuned pipe and the turtle deck on the fuse had stringers and was not sheeted. It looks like the 2 had a sheeted turtle deck. It is also possible that the original builder of the plane modified the turtle deck and put stringers on it instead of sheeting it. Just don't know. I will see what Tony has to say.

Ed