Was it available in '68? I know it was in '69 but I don't think any vehicle manufacturer had an orange in the lineup in '68? Could you get a special paint in a random non-manufacturer color?

AFAIK, Pontiac was offerring SO Orange in 1967. AFAIK it was a GM color called SAFETY ORANGE, There are a couple of GTOs painted in that color. Chrysler had Omaha Orange.

https://images2.imgbox.com/48/59/DFqTszPU_o.jpg

A Look Inside a Private Stash of Rare Muscle Cars - The Brothers Collection

https://www.msn.com/en-us/autos/enth...2f3277855d92a4

Lots of photos

This looks familiar.

Charley, don't you have one if these signs in your "barn"?