I'm in the middle of changing my 2018 6.4 Hemi 2500's gears from 3.73's to 4.56's. I'm thinking I can finish up the rear, drive the truck until the weekend and then tackle the front. That's if I don't use four wheel drive. In park, the front driveshaft turns freely by hand and the front axle has a disconnect. I can see that the driveshaft is basically uncoupled from the transmission. Therefore, I don't see the harm in driving this thing in 2wd until I swap the front gears. Am I missing something or does this seem feasible? Change the rear gears this week, reprogram the truck, drive some, and then swap the front gears the following week. BTW, the True-Track style rear LSD in this AAM 11.5 is one heavy carrier.