I had a 71 Cuda that was all numbers, but the 3rd and 4th cowl numbers were switched, and the tranny started 298 instead of 398, also had a numbers 68 Charger that only had 5 of the 6 numbers of the vin stamped. 68 being the first year, I can see where the assembly line workers probably were grumbling about the new job and weren't too concerned about accuracy.