I don't know if this was done on the earlier cars but later models had the vin stamped under the trunk weather seal....might be worth a peek at that area.
try to answer these Qs 1. is a 2 dr and 4 dr diff wheelbase. in some years wagons was a diff wheelbase. chrysler did do some 2 or 3 % cars in the 60s. hard to detect at the track. 2. would the weight diff be an advantage? 3. has it been acid dipped?
Everything I find says the wheelbase is the same, 2 door or 4 door. And a 2 door would have been around 100lbs lighter. How would you tell if its been acid diped? I have not found a vin on the rear trunk lip of radiator support.
Very cool. 62 Darts are one of my favorite cars. Congratulations! Looking at the pictures, it looks like they did a good job converting it to a 2-door.
Could be those are the SO (Special Order) numbers. They would match the fender tag and build sheet but not the VIN. Got them on my 65 Darts and 65 Barracuda.