Fit wise the bumpers are the same but as wbrowne says the frame will make the brakets different for th 1/2 and 1 tons. Also the bumper on the back of a 1 ton is subtantially heavier than the 1/2 ton bumpers. My picture isn't detailed enough to use for making brkts, but as I said, it shows they are simple enough I think a set could be blacksmithed.
