[special-K]

Rear bumper was an option on all trucks and some states didn't require one, yet. A truck with no bumper option came with a tag mount/light to be mounted under the tailgate.Dealers put some on, and one with the Barden plaque would be dealer installed, although there were other brands. What was available as a factory option were painted rear bumper, chrome rear bumper, or step bumper. The step bumper looked exactly the same as the one shown on this truck. I think that is the same bumper in both pictures and the 2" receiver was added at a later date. All factory step bumpers from 67-71 were this style, made from 4" c-channel w/diamond plate top. The one shown on the '67 in post #8 is actually a '72-only factory step bumper, 4" wide stamped steel. In '73 step bumpers went to 8" stamped steel, which is what is available today.