My deuce also has a 17 digit VIN as it came from the military. It is also listed on the gov liquidation paperwork. (Though they did get one digit wrong probably due to someone mid-reading that digit. I had gov liquidation correct that digit on the SF-97.) I heard (not claiming it’s true) that VINs issued for older/kit built vehicles are not 17 digits on purpose so it’s easy for the state to keep track of which vehicles are 17 digits from an automaker and which are not.