I bought a 4" Skyjacker all spring lift kit back in November, and started the install in December. Between work, my back going out, and crappy Ohio weather with an unheated garage, I finished the install this past weekend. I do need to re-center the steering wheel yet. I just put the wheels and tires back on (32" Yokohama Geolanders that were on the truck when I bought it) and set the truck back down on the concrete floor. I have not driven the truck yet, I'm waiting for a nice warm day, and for the salt to be washed off the roads.
As this truck is a clean Arizona unit, disassembly went fairly easy, only broke one bolt, and rounded off only one brake line flare nut. The shackle bushings were somewhat of a pain, but still easier than if this truck had been an Ohio truck. My truck had the incorrect gas tank in it, so the fuel filler and vent lines were a hodge podge of hollow items screwed, glued, and stuck together. So, I bought a new MTS Company gas tank, float assembly and new hoses, while I was under the truck. I had removed my driveshafts to install the lift kit, so I went through and greased all of the U-joints, slip fittings and trunnion ball. I noticed my transfer case mount was shot, and the transmission mount was collapsing, so I replaced them. While re-installing the rear driveshaft, I noticed that the big nut retaining the transfer case yoke was loose by almost a full turn, so I tightened that. My original flexible rubber lines were really soft and dry rotted, I was glad to replace them with new extended lines. The kit raised the front of the truck 4 3/8", which will probably settle out some. The kit raised the rear of the truck only 3" though. On the original suspension, the rear of the truck sat about 1 1/2" to 1 3/4" higher than the front. The kit also levels the truck out, and this was intentional, according to Skyjacker (I called them). I'm only pointing this out to anybody who might be considering this kit.
One thing I am concerned about though, is I checked my angles at the transfer case output shaft yoke (7 degrees) and at the rear axle pinion yoke (11 degrees). I believe these angles should be the same number, which means the two shafts would be parallel to each other. The new rear springs didn't come with any sort of angled shim on the spring packs. I called Skyjacker about this yesterday, they didn't seem concerned about it at all. I feel sort of apprehensive that when I do drive the truck, it will likely have some sort of rear driveline vibration. Any opinions on this?
Anyway, cheers!