With glue there is not many options. If its was light you could light sand and clear coat. if its a testors or Tamiya color you will be surprised how much old paint is still on ebay....
I have asked the seller thru message what the reserve is and sometimes they tell me and sometimes no. if they tell me and I still want it I bid but most of the time I pass on these auctions..
I am sure it will have to be checked out by a geologist. With building and digging the foundation I wonder if there was any red flags. I hope they get all the cars out of there, it could do it again...
On the chevelles what helped me is you could see the edge of the tail light on the 68. I went by the taillights more then the grill and that's what got me on the Roadrunners ..