Doug,
A group of us ( Randy, Bill M, John, and others) did this show a couple years back. It was perfect since we got to park on the grass. I think it was even cheaper to register the car plus two, then paying the gate fee to get in. If I remember right, we had to submit pictures of our cars and get accepted.
Scott
Originals
Danette and Karen
Krytonite
Snake Pit