the bowtie gang
I didn't think it was directed at me, just covering the bases. I understand the VIN is useless in a search as you are going through. I am clarifying at this time whether some of the Gibb historians can check old archives, to see if they can run VIN's. This might be helpful if and once you have found the car, and are trying to document it fully. Or possibly the current owner has called someone connected with Gibb/Harrell cars.
I do not know if banking records ever are open for data base searches, such as when people are using vehicles for collateral, or listing "assets". This might be a far reach.
Also criminal history searches, when property of known criminals is confiscated by law enforcement.(an inside contact?) Just some thoughts.
Keep the search going, use all resources, knowing details about the car is priceless. That is how I found the "Little Hoss" car. Call all ads that reference the type of car, no matter where you find them. Track every last lead to its conclusion. Do not be timid when contacting people, just ask the proper questions and be polite.