Once the truck was jacked up again, four jackstands were placed under the frame: two at the rear and two in front of the front spring mount. The four jackstands must be used in this manner to avoid stress to the frame while it’s being cut. With the jackstands in the proper position, we slowly lowered the rearend housing so that all the tension was off the springs. We removed the shocks and then the U-bolts that held the rearend to the leaf springs. It’s not necessary to remove the rearend completely; just lower it at this point. Be careful not to overextend the brake lines or the driveshaft.