73 VS 74 Duster Front Bumper Differences.
All I know is I wish mine had the brackets!
I've saved a set of the brackets just in case I ever really get ambitious. Right now the only thing I did was swap the beam behind the bumper for an aluminum, and the last owner (buddy of mine) slid the shocks in and welded them so the bumper doesn't stick out so much. Still too wide for the car, but it's better.