Update: Went for several hours on Saturday, lots of traffic and it seemed like a good deal for the parking and entry fee. About 10 am or so it got very crowded, but that is a good sign I think. Two of the large buildings were just about full of vendors, with the third shein use holding a number of cars and trucks in the corral. There about 10 vendors or so in that last building.
Mostly this swap meet brought out the Mustang, Fairlane, Cougar, and Falcon enthusiasts. There were some 50's parts but they were few and far between. Seemed to be a good bunch of folks though selling parts - my kind of crowd.