you can learn a lot from the rear of the firewall where the rivets come through also. they can make the tags as good as they want or even use a tag from another car they can not replicate the patina of the inner firewall where the rivets come through the fuzzy rust and the factory sealer pushing out of them. here is a photo of a 69 rs copo I was helping authenticate a while back. hopefully the photo makes it through!
