In Maine, for antique vehicles we only need a bill of sale and vin to register. I would not be suprised at all if my bronco had glove box switched out. It had been re done a few times, and I just rebuilt everything again. It said the vin of a 70, but did have a dana 44 drum brake (71.5-75) under the front. I was written a bill of sale by my friends grandfather who owned it, written as a 68. Since then I have put a frame of different bronco underneath. For me, my rig is a straight mud runner, that if I wanted, I could drive on road. But in your situation you may want to make sure everything matches for legal reasons. In the back of Jeff's Bronco graveyard catalogs (they are free) give detailed info on vin # and years they were manufactured, along with what trim packages, drivetrain options came on certain years. It is very educational, and will give you more knowledge when looking at buying a bronco.