1965 Dart: Confirming VIN, fender tag and body numbers

I wonder if the VIN system changed over time to make it harder to commit fraud. My 67 Dart has the VIN on the door hinge pillar but I guess all '68 and later cars had them on the dash frame.
When I hear people talk about "body numbers", do they match the VIN on later cars? I have a finished 1970 Charger and I don't want to peel up trunk weatherstripping or coolant stickers just to check.