towing fifth wheel
i have an '07 3500, dually, long box quad cab, four speed auto, i tow a 38' rapter toy hauler, the changes i made were as follows.
rear gear change from 3.73 to 4.10,
jake brake installed,
firestone air springs installed,
changed rear over load from single leaf to four leaf,
rear sway bar installed,
full set of gauges,
double deep trans pan,
i have done many other changes but they did not pertain to towing, they are more personal changes. i am legally able to tow 15000 pounds, and i have a max package weight of just under 28000 pounds. i also carry a 9' 6" adventurer camper which we used for a five month trip to the east coast and down through the middle states, with this setup i tow an '09 wrangler for city use. i hope this helps.