1970 F100 Stepside Shortbed

[69Ford100]

Hi all, Dose anyone have an image to share of an F100 Stepside shortbed with a utility rack or shell on the bed? Can a rack or shell be mounted on this type of bed? Im sure a custom rack can be built and mounted, but wondering if there was ever a stock rack. I’m considering buying a 1970 F100 Stepside but would like to install a rack-I cannot locate any old photos or ford ads with a rack or shell on stepside short beds. Thanks!