Ok here are the questions that pop up in my head.
1. The order paperwork shows 07/26/68 which is a Saturday. The plant wouldnt have gotten the paperwork until the following week which if they started the build that week it would have been a 07E not 07D.. Anyone else agree or disagree.?.
2. The vin on the pad looks a little odd to me. Not saying its a restamp just one of the characters looks different than what I am used to seeing.
On the flip side the pad could be fine and the vin on the paper work could be a car they let him drive until the one he ordered came in. Also the plant may go by when the order was placed for when the build date is to occur (but I dont have the warm fuzzies about that)..
Bottom line Id have the hidden vins checked and then double checked. And if you still have concerns see if there is a member close that can look the car over or have Jerry verify the car.