I've heard of two Cougar 500s in the area. One was in Gloucester Virginia and another one is somewhere here in Richmond. Both are 428 Cobra Jets.
I personally have not seen either. An old high school friend of mine briefly owned the one in Gloucester and it was missing the motor when he had it. I kept trying to go see it but he sold it (back to the original owner, I think) before I got down there.