1967 Barracuda grille assembly

First time I did this was about 1982. No internet help available. The studs turning on the perimeter can be cut with a die grinder. If a stud turns in the aluminum grille frame you have to pinch the frame with needle nose vise grips to capture the stud, cut the nut off, whatever. Those little studs aren't easily replaced. Tool scars to be sanded away after the fact.
To replace the perimeter studs I used the same T-bolts that the factory used in the 67 upper and lower trunk lid trim. The odd shaped sheet metal head on those fits right inside the aluminum very well. They are cadmium plated too. I used stainless washers and nuts.
I have done this 3 times now ( 6 different grilles ).
The bumper and brackets have to come off to pull the header panel. I think its well worth the effort to remove the entire assemblies though. The gaps between grilles and header close up better when the header can move some.
One note of caution... Get a helper if you remove the bumper. Those little stabilizers on the ends can scratch fenders in a heartbeat.