To make this one I used a piece of 1x2 stock welded to the lumber rack to hold a Delta fork mount. I then mounted a section of Yakima wheel tray to the box with spacers to hold it off the box. I went high tech and twist 12 gauge wire under the tray and through the wheel to prevent the wheel from bouncing out. A great set up as my truck bed often has debris that is not bike friendly floating around. It is a bit tall on my truck but it is NOT on the curb side so as to avoid hitting things.