I was going through some pictures that came via 6S141's previous owner, and I found the following two pictures.
I'd like to see if the red 1966 GT350 can be identified based on the license plate "Valina". These pictures were taken in 1984 at a Shelby Swap Meet and Car Show. These might have been taken in Illinois, as the prior owner of 6S141 lived near Champaign, IL at the time.
The second photo shows the tail end of a white 67 Shelby, and it could be the owner (at the time) sitting in the lawn chair behind the car.
Please let me know if you have any ideas - thanks!