So....What is YOUR opinion on VIN swaps ?

I've had the cops come to my house to verify the VIN on cars that didn't have titles, and have had them question the number of characters in the VIN! I've also been stopped at the border for over 2 hours because the customs girl couldn't wrap her head around the number of characters ina 1966 VIN, despite all of the proper paperwork being filed and accepted!! Most municipalities, police, and really even the DMV doesn't always understand the old VIN systems!! They only know what the DMV tells them!!