Alabama is Not Arkansas
A big OOPS on my part. The car is in Arkansas, not Alabama. Obviously, the laws differ from state to state, and the laws in Arkansas say something different that what I posted earlier.
I am no lawyer, but it appears that the laws in Arkansas are not as clear as those in Alabama regarding the alteration of VIN numbers (which is what switching VIN plates is). Here is what the most applicable code from Arkansas says:
27-14-2210. Vehicles or engines without manufacturers’ numbers. (a) Any person who knowingly buys, receives, disposes of, sells, offers for sale, or has in his or her possession any motor vehicle or engine removed from a motor vehicle from which the manufacturer’s serial or engine number or other distinguishing number or identification mark or number placed thereon under assignment from the Office of Motor Vehicle has been removed, defaced, covered, altered, or destroyed for the purpose of concealing or misrepresenting the identity of the motor vehicle or engine is guilty of a misdemeanor.
Again, both buyer and seller can be held liable. If the seller did title the Alpine body as a Tiger (using the Tiger VIN) or states that the Tiger's title belongs to the altered Alpine, then he or she is "misrepresenting the identity of the motor vehicle". And if a buyer also tries to get title changed to his or her name, they would also be guilty of violating this statute.
It appears that only the second time a person is caught does it become a felony.