67 Barracuda grill

If you haven't found a solution, The same common 'T' bolts that hold the 2 narrow pieces of trim on your trunk lid can replace every stud in the grilles outer perimeters.
Only 1 drawback to consider... IF These plated threads do rust over the coming 10 -> 20 years, the next guy might discover that with enough force the steel 'T' part could cut through the aluminum like a knife. I used them anyway along with stainless nuts. I haven't seen a case where these cut the trunk trim.