'67-'68 (maybe '69 too?), Grill Surround repair kit

This has me thinking that you may have seen a '67? taken apart and repaired, I am not familiar with the '67 or '69 grill surrounds. Sounds like the stud hardware is different than the '68's!
After removing my stud, (as you described), (ALL) The hole on '68's are round, doesn't really supersize me, just about every other part on these cars are a little unique in one way.
I agree with there is more than one way to skin a cat! (as far as how-to repair these parts)
They are all a different, some more than others. 67 and 8 are not so different but 69 changed a lot.
Anodized aluminum was replaced with chromed pot metal, etc...
There was a company called Savage that built modified B'cudas. Starting with 67 model, One of their "tricks" was to use a section of a 3rd grille to create a continuous grille ( sheet metal cut from the header panel ), more of a Dart look in result. There are pictures floating around the web. Anyway... Imagine their displeasure with the OEM mfgr changing these grilles with every year model. As far as I know, there wasn't a 69 model Savage Barracuda.