I have a bed rack that goes over soft tonneau covers for mounting various bike racks or equipment baskets. The uprights are adjustable with a couple allen keys and can slide all the way forward to allow full access to the truck bed. Your tonneau cover goes ontop of the Prorac slide rails. You'll need to purchase some foam weather stripping to fill the gaps between the tailgate and the cab. I'm keeping the two bike trays shown in the pictures.