Every state is different on title and VIN# requirements. My 1950 truck was originally titled in Washington state using a long gone engine number. Oregon didn't like this or the ID plate held on with screws. I too went armed to DMV with books showing that engine number was used and asked them to assign ID# from door plate. DMV didn't like this and they made me get appointment with state police to confirm the truck wasn't stolen and to try to find the a VIN number stamped on the frame. No amount of talking would change their mind that they would not find one. After about two hours of a state trooper wirebrushing my frame (nice fringe benefit) he gave up and sent me back to DMV with a note saying assign the vehicle ID # on door post as VIN#. (Just what I had asked them to do in the first place.) They again didn't like the screwed on door plate so they stamped an aluminum sticker with the ID# to put on the door post. This sticker was right below the ID plate with the same # and was stuck on a bad rattle can paint job. It was easier to remove then the plate when I started restoration. I am sure I will have to battle with DMV again when I go in to re-register my truck after restoration. Good luck,
Steve O

1950 Chevy 3100
261, 4 speed
Purchased 1977

1964 Pontiac Lemans Convert