I have found the 99+ trucks much easier to locate a rear axle with the gear ratios I like and/or a factory locker. However, I know the complete assembly is not easily swapped. Just trying to get a locker and or gears on the cheap.
A forum community dedicated to GMC and Chevy full size owners and enthusiasts. Come join the discussion about Silverados, Sierras, and other full size trucks performance, modifications, suspension, lift kits, tires, maintenance, and more!