I'm trying to find the best prefab sub enclosure that will fit under a tonneau cover yet leave most of the cargo space untouched. I'm considering the DS18 JBASS 10" enclosure, or an enclosure from JeepBoxPro -- both are tailgate mounted enclosures. Has anyone had experience with either of these products and/or other tailgate mounts that they would be willing to share? I don't want rattle in the back end. I'm open to any other suggestions.