I wonder if he means the locating tabs need to be swapped over from the original grille. Looking at my grilles, including the one in the car, I have no idea what he could mean. He's not the most descriptive fella in the world, and his photos aren't very helpful. In fact, in the pictures the grille doesn't look to be installed properly. It seems to jut out toward the bottom near the center. In the original application, it most definitely has a slight
forward lean:
Dude with no hood latch doesn't need one. He found a perfectly-horrible "Six Pack" hood which is probably pinned at all four corners. Call me a purist--there's a laugh--but to me Six Pack scoops do not look good on anything except 1969 B-bodies. It was not a particularly attractive scoop on its own. Regardless, his car seems to exhibit the same forward-thrusting lower center point as the orange car... which tells me they're doing it wrong.
I don't know if any of this will help, but here goes nothin'... maybe seeing the factory arrangement will help. These photos should enlarge if you click on 'em.
Hood latch support:
Detail of RH headlamp area, upper:
"Center" grille support, meaning the two closest to the center of the grille, this one being the RH side. The bolt is broken (there are lots of missing fasteners on my car) but it sits on a tab that's part of the lower filler panel:
Outer RH grille support "foot" (obscured by wire) near headlamp bezel, sitting atop another filler-panel tab--with another broken fastener:
Same support, this time as viewed from the side (camera was in the area of the hood latch support):
This is the bird's-eye view of the same area on the LH side, also with a broken bolt, taken without flash and with digital enhancement (brightness/contrast) in an effort to get some better detail:
Looking at the grilles that are not in a car, I honestly haven't a clue about swapping anything around. Both center "feet" are bent in the same direction, so it's not like they'd reverse anything if swapped. The outer brackets are defined by the headlamp, so there's no "swapping those over" either. Being that the Duster grille is plastic, I'd imagine that these parts, if they exist at all, would be dramatically different or molded into the grille itself.
The outer headlamp bezel screws, as I recall, simply thread into standoffs mounted to the fender.
I was going to attempt to make suggestions, but do you think I could find a picture of a '71 Duster grille filler panel? Of course not.