The hood ornament on that truck is also different...it also looks like there was a 3rd (bottom) sergeant stripe that was removed?
I wonder if there are any other "official" renderings/photos/sketches from "back in the day" of what the proposed fender spear/sergeant stripe arrangement would have been like on the AD trucks. Any insight as to why GM did not move ahead with this trim on the pickups? We all have seen photos of what guys have actually done over the years, especially recently with the reproduction parts now available.