02. A one-piece subframe made from DOM tubing mounts the lower pickup points of the front suspension. When installing its kit Rancho recommends the front differential assembly be mounted to this new subframe before lifting the entire assembly up into the truck. This one-piece design can be trickier to install than the typical two-piece lower subframe, but makes for a very strong kit once in place. If you were installing this kit in your driveway you'd need to set this assembly on at least two floorjacks. Professional shops with a lift can use a transmission jack or even a rollaway cart, and lower the truck onto the subframe.