We are putting an aluminum slide in dump bed in the bed of the 3500. When it is in, it will probably be about 4"-6" higher than the sides of the regular bed. We are also thinking of buying a gooseneck equiptment trailer to handle some more weight for towing. Now, is there a way that we could mount the hitch in the dump bed? The bed is all aluminum and mounted to the truck by only three or four bolts. Would this be strong enough to tow with? If we reinforced the bed in the truck like hell, could we do it that way? We will be towing between up to 13,000lbs probably. I need ideas on how to accomplish putting in the dump bed and being able to use a gooseneck trailer. Be creative~