Technically speaking....a 67 can't be numbers matching as there is no VIN stamped on the engine, transmission or body of the car. It is harder to prove all the pieces came on the same car as there is no one common number between all of the marked components. You can tie the Sales Order (SO) number on the tag and body to the VIN plate through a broadcast sheet, window sticker or, if available, the IBM card through Chrysler Historical or an IBM inspection card found in the car.
From a practical stand point, you can look at the engine assembly date (EAD) on the front pad to see if it is before or around the scheduled production date (SPD) on the fender tag. If it is 'reasonably' ahead of the SPD, say 30-60 days, it increases the likelihood it is the original engine. If the assembly date is 'reasonably' around the or after the SPD, it could be the original engine. If the EAD is not even the same model year or a significant amount of time after the SPD, it is probably not the original engine.
You can confirm the Sales order number from the Tag matches the radiator support number. There may be another body number stamped behind the rear bumper of the car. But to tie the SO to the VIN, you have to have one of the above documents to prove the VIN and fender tag came from the same car.