Leveling kit?
#1
#2
RIght. There are two types. One lifts the front, the other lowers the rear. Leveling kits for the rear are usually lowering shackles. The ones that lift the front of your truck are basically a spacer. How much you lift or lower can easily be determined by measuring the front and rear ride heights. Leveling kits are sold by how much height they add or subtract.