When moving from Washington to Oregon, I had a determined state patrol worker spend about an hour and a half with my 50 Chev on a lift looking for some stamped number on my frame. (I did get a bit of free frame cleaning from his wire brush.) No amount of talking or manuals would convince him that he would find nothing and that the engine number on the old title was long gone. He finally gave up and the state assigned the body serial number as my VIN. Stamped in on a cheesy metalic sticker and stuck it to the door pillar.