I moved down to So Cal about 10 years ago from the Bay Area. I have been to the Portland swap meet, Turlock, Pleasanton, and Hershey PA. I had heard Pomona was a big deal. While it was a good size, I was disappointed with so few parts, or signs ( I collect original gas/oil signs) , and the few vendors that did have car stuff wanted double what the going rates were. Those same vendors probably still have the same parts, just dragging them back and forth. I have heard Long Beach is good, but that is a ways for me.