Thanks for the responses, I am gleaning that the 550 or 5500 is the safer option.
Also, that even loaded a washboard road will be jarring as the front of the truck is still lighter loaded than the rear.
I noticed that the gas models of these trucks force you to have 4.88 gears, at least Ford does, I dan’t imagine how that must impact mileage when freeway driving, even at just 65mph.
I’m currently getting 9 mpg with my Ford 350 with the 7.3 Godzilla and 4.30’s….I’d assume my mpgs would drop lower than that with 4.88’s.