1963 Barracuda convertible

I would have to wonder if it is even an authentic story. This is the only time I have ever heard of such a car existing. A car like this's existence would have been documented long before it surfaces now 50 years later after all of the parties are probably dead and gone.

The 2 colored 64-66 firewall and the newer style air cleaner and the power brake booster all say fake to me. I would need actual proof to believe it.