I'm certainly no expert, but I've seen more than a few VIN pads over the years. If I were looking at a car to buy, and I saw the pad stamped that way, I would immediately think "fake", and base my buying decision on it being a non-numbers matching car.

...and (I believe), a 1971 block would have the FULL vin on it.

[img]https://photos.google.com/search/_tra_/photo/AF1QipP622C0UgUgrRn9SDVmwoPXVW4gJ4A2UcAzWOit[/img]
'69 GTX 440 D21 A34 N96
'70 Coronet 383 'Vert
'71 Demon 340 SixPack 4-Speed
'72 Cuda 340 FE5
'74 Kawasaki Z1, and...
(12) Japanese Enduro's and SuperBikes from the 1970's! smile