Re: shackel question...
If you like your U-Joints, i'd stay away from a shackle lift. Thiknk abou tit, with a longer shackle, you are effectively rotating the axle a few degrees. In the front, with a standard shckle setup, you will be tilting the pinion upward, eliminating caster. In the rear, you will be pointing the yoke upward as well, which may screw up your angles, wear u-joints, and cause vibrations. I'm not trashing on anyone, jus trying to be sure you know all sides of the coin. Good luck and have fun with whatever you do!!
98 Dodge Ram 1500 Quad Cab 4x4 Sport Plus, 5.9L 360, auto, Locked, 3.92s, BFG A/T KOs, RS9000s, RS5000 stabilizer, BedRug, tows my CJ-7!