Will you be adding a body to your truck, if so then the flaps can hang from that. If not then you can make a hanger for them that attaches to the rear frame rail. If temporary you can bolt a 2" x 2" piece of angle iron across the back of the frame and hang them from that.
Flaps come in 24, 30 and 36" heights. Position them so they don't drag when loaded.
Mike B
