EDIT: think it may be called a brush bar!
i believe that this is these are the bolts i have to remove in order to get my bullbar on, but from what i can see it looks as though if i remove them shit will just kinda fall.
also, my bullbar bolts onto the front bumber, rather than replacing it
i've got an 85 sierra, not quite the mechanic as you can probably tell by now
just got a photo of the front right one
and a bit further away
thanks in advance for any help
