[85gmcguy]

I just finished this swap (actually went from step to roll pan then to sport bumper). Unless you can find them in the junk yard, the brackets will set you back more than the bumper itself. Gotta love the way it looks, though. A couple of places sell the 74-80 brackets as a kit (a little cheaper), but they'll nail you on the 81-87 piece-by-piece.