I found two different VIN # on my Tioga..One from the manufacture(Tioga) I'm guessing, and the other from Dodge, I'm guessing again. They're both only 13 characters and they're both on 2 seperate metal riveted id tags on the frame in the door. So my ? is , is 13 characters right for that model?(1974) If not, where might I find the correct vin# so I may check against any leins and such and do I need tyo know what the last state this vehicle was registered in? Thank you in advance..