Just this weekend came across a J**per selling his for cheap... a little narrow for the K5, but it musta been freaking hooge on his TJ or whatever. I wanted it 'cuz (1) it had a nice deep step to it, for me to stand on, and to keep small Hondas off my aft end, and (2) the guy wanted twenty bucks, which on a per pound basis was a steal.
It's HEAVY ... I'm thinking 4" square tube, prolly 1/4" thick, plus some diamond plate on top and ends ... and 1/4" or 5/16" thick end plates to bolt to the frame.
A little creative drilling and some grade 8 hardware, and voila, Tankie has a good step on the back now (I got tired of slipping off the factory bumper when I was hopping up to undo the hardtop or get in the back of whatever.)
Oh, and though you didn't ask, this is the front bumper I inherited ... it's like a Warn winch bumper with a brush guard welded on, plus some assorted tabs for lighting. (Me? Vision troubles? Naah.)
There's some more pix of the rear bumper
in my member's gallery
-- A