Would you spend over $200 on a part for your car that you knew going in was wrong? Would you accept errors and inaccurate reproduction?
I guess you never bought a reproduction body panel for a mopar in the last 30 years.
That's apples and oranges and you know it.
If the guy really wants a tag, go ahead and have one made with what you can know and leave the rest blank or just put Xs for the data that can't be determined. Or just make it up and move on.
