Guys I don't know the federal laws or the California laws, but in the State of Washington it is a felony to tamper with the serial number, meaning likely jail time. What you are talking about doing would sure qualify.
Its not that you are trying to steal this truck, but that the rules around the paperwork have made it illegal in many places just to remove and replace the id plate.
It is actually illegal in the State of Washington to sell a vehicle without a title. It sure does not stop people from offering cars and trucks with no title on Craigslist or eBay.