Dan is right. There will be hundreds of old cars and trucks there. From the 1910s thru the present day, people bring out what they want to show off. Most are restored and modified to a finished condition that is great. Some are still under construction but driveable. And a few are inport tuners.
The swap is a great place to buy parts or vehicles. You can also take your stuff and sell it in a rented space for about $20. There will be hundreds of sellers and buyers negotiating for parts and supplies. Do you need wax, motor oil, spray paint, POR 15, etc. Jag