right, the rear bumper was an add on option for 1/2 and 3/4 ton , and that bumper is 0.14 inches thick, part number 3684823.
but the question is about documentation and part numbers for the 1 ton rear bumper
if there truly was there a factory / dealer rear bumper for a 1 ton pickup that is the correct 0.24 inches thick, what is that part number, and are there any documents with details about it's installation.
almost (not quite) right:
1/2 & 3/4 ton pickups (47-55st) came with front & rear bumpers. [wrong: rear bumpers were RPO]
1 ton pickups did not come with a rear bumper.
1 ton panel-body trucks came with front & rear bumpers.
http://chevy.oldcarmanualproject.com/parts/1929_54/447.htm
