What about Jerry in Starke? He has quite a few Mopars. Prices aren't cheap but he has quite a bit of inventory.
There is also a junkyard on Highway 207 between St Augustine and Palatka near or before the town of Spuds. There is a 68 Charger on their post outside. It is on the north side of 207 going west. There were a number of older Chargers and Barracudas, a few Scamps, Dusters and Darts. Various C bodies. Nice guys working there let me wander around and check it all out.
There is another place just as you come in to the town of Waycross GA, its on the right hand side as you enter town coming from 23/US1 Florida.
They have stuff going back to 40's and 50's,60's. Some good stuff inside some of the covered buildings too.