I believe the deepdish wheels have the center down deeper into the wheel, similar to a wide A body wheel if you've seen one of those. My brother has the wheels off of my dads 66 300 on his 67 Coronet with Charger full covers. Just as a point of interest, I've had those Charger wheel covers on my old 67 B'cuda with the wide Formula S wheels. I don't know if the deepdish wheels have a different offset, or are just stamped differently, I'd have to check my brothers car.
Travis..