Aarrgh! I can't stand it! If I owned a ZL1 and still had the drivetrain AND the car was "gone" AND I had the slightest flicker of hope that it still existed, I'd gather all the kings horses and men and turn over every rock! If this VIN is known on a car in a specific state, let alone a specific owner, you could have a current registration in hours or days just using the internet!! Furthermore, it would seem to me to be pretty easy to instigate an official investigation (as mentioned previously), pronto!
Why wouldn't you do this, especially if you were the bonafide owner?????
Dave