Hello Erasergirl. I have an idea for you. OK Here on the back of the 'upper bar' move the pads so they are where the bar bends down. take the inside set of straps and run them over the tailgate and see if you 'hook' them to the bottom of it. if not maybe you can run them under and loop them around the bottom bar and back up to the buckle. then the outside straps just hook to your bumper. you will have to fiddle with it just a bit to make it level, but I think that should do it as long as the straps over the tailgate are nice and tight.

the Allen 103A was the most versitile rack ever built. it will go on almost anything. imho