Hy chaz71, if we are discussing 1/2 ton here, then I believe "Positraction" was an option. You would have to find and install a "Positraction" differential case and swap your ring gear onto it, the differential case may or may not be two pieces. While doing the upgrade check all your bearings and replace all seals. Setting up used gears for backlash can be tricky if you have never done it, take it to an established rear axle shop and have them set it up with the new pieces.
