as said above, there was no version called a 'ranch truck', and there was no 'Apache' [58-61 Chev light truck. 1/2T. 3/4T or 1T] that came with a metal bed floor, especially not diamond plate - when Chev started using metal floors they were wide ribbed sheet metal .... a rear bumper was an option, but not a "heavy duty" one .... use caution on that one if the seller is handing out that kind of BS
Bill