I looked on your site & saw the sales document showing the CA license plate "X 62 994" was already assigned to the car when sold to 20th Century Fox. Plates stay with the car once registered in CA, IMO this plate was for an owner between Chrysler & 20th Century Fox - likely some type of commercial limousine service.
Too bad records do not exist anymore to trace the original owner of X 62 994 or the previous owner or company might be found of the car prior to its modification.
I am told California only keeps DMV paperwork for 10 years.
