Roadrunner or Not

Stupid question time.
If this car has no VIN on it, how could anyone prove it is a (specific) stolen car?
Fabed VIN? Isn't that a separate issue?
And, since Texas recognizes the VIN (doesn't have a problem with it) what remedy do they have if your car is missing the VIN through a major repair like a salvage.
Maybe just reissue another VIN and matching tag. Since this car is made up, who cares about the "Chrysler" VIN?
We only care about Texas laws here.

The best method I know of is to start tracing the history. The person that sold them the car will know if it had a VIN tag at some point when they owned it. They will have the information about where THEY acquired the vehicle. Somewhere in the car's history the answer should be found. They may run into an obstacle if a previous owner has passed away.

I've heard that notarized statements from prior owners will satisfy the governments requirement to prove rightful ownership. I realize it might be a daunting task to trace the information down, but if they're able to get the info it should alleviate any questions regarding rightful ownership and might possibly add to the car's future value (to themselves and others).