I have a set of bumper shocks, and a rear bumper support/brace ... These are off my NorCali GN, so they're in good shape rust-wise. I'm kinda far away, but PM if you're interested and I can send pix.
John A, Turbohh
Not sure what parts you mean by "bumper brackets", but I have the front and rear steel inner support structures that the bumper shock bolts to for attaching to the frame.