Vertical Fin Fuselage Mount

[evmlarry]

Hi everyone. My buddy and I just recently acquired a C170A project which we are in the process of doing a ground up restoration on. The fuselage was reskinned prior to our purchase however it appears they did not modify the top of the fuselage for the dorsal fin mount point. Does anyone happen to have a really good picture of this from their airplane that they can share?

Thanks much!