Here in Texas it is pretty cheap, if not quick, to reassign a VIN. Especially if you were foolish enough to tell people what you had done. Having 2 Mustangs, one titled and the other not, swapping the vin plate to the titled one would constitute fraud, and you would have a very hard time convincing a judge that you simply replaced parts. In this case, most of the vehicle will be repair parts. There is no restriction on the quantity of repair parts used in fixing a vehicle. If the aformentioned pile of parts that is being made into a vehicle includes a part from a VIN taged vehicle, and that part has the VIN number affixed, you can pretty easily and legally make the pile of parts into that particular vehicle again. For indeed, there are many more completely legal 32 Fords than were ever built in the 30's by Ford. You can do it as a custom vehicle, or a 32 Ford. If you are building a car from mixed parts, especially a pile of new parts that don't have a VIN assigned to a vehicle anywhere, you get to apply for a new VIN. Even if that body part is the entire shell or tub. In which case you generally take the vin tag off the now discarded body part, and place it on the replacement body part. Even if the replacement part is an entire body shell.