Don't pull a leaf. It'll induce a lot of spring-wrap. If you want a 4" of lift out of SOA, the closet you can get is to buy yourself leaf packs from an Explorer, cut the eyes off the main leaf, and install the whole new pack under your current main leaf (discarding the rest of yours). The MJ main leaf must be retained because the Explorer main doesn't center the axle properly (close but not quite). If it's still too high, pull out the Explorers main leaf.
4wd MJ on the left, 2wd in the middle, Explorer on the right.