I'd like to look into a set of greasable brackets. Thank you for the information.As Longroof said, the F-body brackets won't work due to the offset holes. Energy Suspensions sells a Greasable bracket/36mm bushing for GM trucks that may need less bracket mods to work (GM Trucks have 3" bolt centers)
Btw, when I first got my 36mm bar, of course, I took the brackets as well thinking that they would bolt up like the standard G-body parts. I guess I found out like everyone else had that they don't work. I even tried modifying them, or the mounting holes. They just were too wonky.