Then just say no. But making the prove-in-court case is a little more difficult.
Attached is a general fuselage drawing of the early 7. One is with the originally shipped short rudder and the other the replaced tall rudder. Look at the information blocks. They are all the same. I was not impressed with the Vans (publicly available) drawing history control, but it may have been by design for reverse engineering purposes. I have all the other dwg's at the airport and have the short rudder information. The timeline is that the 6 came first. It progressed to a counterweighted rudder with .020 skin. That was the last 6 rudder sold, and the first 7 rudder sold. To actually prove they are the same requires a list of detail dimensions, and materials, and is not available. So you might say the 8 rudder is really the late 6 rudder. I will post the 7PP, 7 and the 6 drawing if I have them.
All straight now?
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View attachment 30482