Great info Jeff! For the Camaros, I suggest the orphan sections of CRG (Camaro Research Group)
http://www.camaros.org/forum/
I dont think either of my two Camaros were from the south, But my SS is a transplant, so its possible. Any 69 SS350 4-speed Frost green convertibles on your list?
There is also Team Camaro and Team Chevelle that would be interested.
www.camaros.net and
www.chevelles.com. Many people here are on those sites to post your info if you do not want to sign up for an account.