[xb-60]

Bill,
I agree with Tim.
Keep the FIA car, ERA2080, and spec. your own ERA 289FIA build.
I don't know the answer to this, but have you ever spec'd a new Cobra build exactly as you would want it for yourself? If not, then it's difficult to find an existing car that is exactly what you want.

As "somebody" said "Build the Cobra of YOUR dreams.... then drive it and enjoy it, don’t save it for the next guy."

Cheers!
Glen