This may have been answered before - if so, my appologies. I have a '98. 5 3500 4x4 and the clearance between the top of the box and the bottom surface of the 5th wheel, especially near the tailgate area is so close I have to be very carefull going over uneven ground at times. I can raise the hitch, but then the trailer will really be off level quite a bit. Does anyone know of a way to lower the back of the truck an inch or two without severly altering the ride and load carrying ability? Thanks for any info other members can provide. This list is a fantastic way to share information and experience.