I am special ordering an F350 6.7L 8' bed 4x4 single rear wheel for towing a 35' 15k lb toy hauler.
I am shocked to see that you must switch to dual rear wheel to get gears lower than 3.55.
I plan to only install a leveling kit and 34 to 35" Toyos on either 18 or 20" wheels, but 3.55 seems light.
I would be comfortable with 3.73, but had planned to push for 4.10.
Thoughts?