Hi guys so I sent in my form to the DMV and gave the bike frame as a VIN and the engine number as a sticker on the engine, I got my registration card and everything was good. I then proceeded to do an oil change on the bike and found out that the engine actually has a legitimate serial number (its a 4 stroke, 110CC). I wrote another number just 4 letters it had on a sticker. Is there any way to change this to the actual engine#. I would assume its like when an engine on a car blows and a new engine is put on the car. How do they proceed to change the engine number and is that something that I would be able to do?