It's actually Alan Lewis' site. I'm just a contributor. I think we did a pretty good job documenting them.
Don't know of any that are coming up for sale. There are 11 in my registry that are still around. The one that Jadaharabi mentioned is not in my registry. So maybe 12. When the San Rafael car came up for sale, I bought it site unseen. Told the wife that I would get rid of my 64 Belvedere if I bought it. I'm glad I pulled the trigger and bought it. Not the correct engine but it's in great shape. I'll let you know if any come up for sale..