Motorvated said:
This was in the back of my truck when I bugth it. I have two of these brackets.
Forget the brackets, killer 1980's boogie board
Edit:
Actually it looks like the two brackets you have are ment to stand vertically over the front bumper. If you could stand them up so the brackets (right side of pic) are on the ground while the large pieces stand vertically (looks like there used to be tubes between the large pieces holding them parallel). In this position the brackets (ones one the right with the two holes in top) may sit on your frame. I dont see how you could attach that front bumper to the vertical pieces though.
Look to see if you have any holes in your forward frame section-