Is the fender tag still there?
Unfortunately a fender tag on a '67 doesn't guarantee that the car is genuine. As there is no VIN on a '67 fender tag, it could have come from another car.
The shipping order number on the fender tag should match the number stamped on the radiator support.
Agreed. The SO number should also be stamped on the rear. But I recall an incident years ago (probably 20 or more) where there was a fake Hemi GTX that had both body stampings installed. As I recall, what was somewhat humorous about that was that the counterfeiters worried about those details but forgot the sill chrome that a GTX has.
