Troy
I'm not familar with B Bodys that much ( Gees where have I heard that before ) but do you remember if there was undercoating on the front bumper bracket? And in you picture is that undercoating under where the bumper bracket would be?
I know on some of the Cudas I've done, I've had to dig out the bumper bracket bolts from undercoating just to get a socket on them.

Your shot from that distance is perfect for seeing the type of mask they must have used...it looks like a simple shape compared to other complicated shapes I've seen.

Awesome picture