The best axle to get is a d-60 with the kingpins, the ball jointed ones were not near as strong. They were found in trucks prior to 92 i believe. The swap is a bolt in all you need is new u-bolts and the tie rods. You wont regret getting rid of that twin-i-beam mess. You can't get an axle from the 70's models because the frame was a few inches narrower on them and the leaf spring perches will not line up and it will cause you all kinds of head aches.
A forum community dedicated to Diesel engine owners and enthusiasts. Come join the discussion about performance, builds, ecodiesel, towing capacity, modifications, classifieds, troubleshooting, maintenance, and more!