Presently towing just under 14k gooseneck horsetrailer with my 96 dodge 3500 4x4 dually with manual trans ( and just put in my 4th clutch plate at 145k on the odometer). I'm thinking of upgrading and considering shortbed and single rear axle. Is that unreasonable with the weight I am pulling? If a short bed is feasable, do I need to put in a sliding hitch (the trailer has a wide front over the hitch)? Anyone know the minimum distance between the cab and the hitch for this set up?