Sunbelt Ag Expo at 290 Harper Boulevard, Moultrie, Georgia.

Overall a great show and swap meet but could be a little organized as far as being able to find specific vendors. Maybe a site map or flyer when you come in. Possibly marking aisle numbers or making them specific to make of car or an antique aisle, etc...
Also make sure to get to the event early. The vendors started packing up by 2:30 even though the event was supposed to go till 6:00pm and website said no cars to go in gates for pack up till 5:00.
Bring lots of cash. You can find almost anything from classic parts, to new super engines. From flea market finds to antiques as well as new fun gadgets and gizmos.