This is comical. "Every correct VIN" on a car that left Detroit with a 6cyl can suddenly becomes a HEMI and it's ok to pass it off as such? Sometimes Federal laws are a damn good thing. I believe in this case it sure as hell is. I call putting new VINs on a 6cyl, or a repopped chassis FRAUD.
There were only so many Hemi cars made. When they are gone, they are gone. Better have good insurance if you own one cause all you "deserve" is a reimbursement, not another car with your old VIN tags.