66 Dart Convertible

Cool car but a mix/match of parts. The front fenders/grill/hood are 63. The dash is 66 as well as the tail lights and the rear bumper is 63-65 with the valance. I like the combination. What's the first 5 digits of the VIN? tI have thought about changing to a earlier bumper/valance too except I don't want to loose my back up lights. tmm