Incorrect dash vin tag

No. Worman does not own the car.

As long as the owner has the bill of sale and the correct registration transferring ownership, I don't think any Motor vehicle Registration Dept. is going to check production or sequence numbers on the Rad core or the trunk rail. I've seen AMD totally restore cars including rad supports, trunk rails and gutters without transferring sequence or production numbers .

If the paperwork matches the dash vin and the tag hasnt been tampered with, the owner is good to go.

As long as he doesn't try to pass it off as an original car to the next buyer, no harm no foul.