Yeah, I'm going to agree with Duner, through all the trouble I have had in the past with law enforcement, I've never been asked for a VIN, title, registration, or any other way to show I won the bike. Evene on my trips to the impound, I have never been asked for more then a liscense. Like Duner said, most cops proabably don't even know where the VIN is. I wouldnt be too worried, even if you don't call, but have that notarized bill of sale, that is going to cover you damn well in a court of law. Good luck bro!