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AAL stands for add-a-leaf. It's as simple as adding one extra leaf per side on the rear leaf spring packs. You can raise the front pretty easily by turning the bolts on your torsion bar keys, however this will change your front suspension and steering geometry and can cause quicker wear of front end parts. Also, if you crank the bars more than an inch or so, it would be a good idea to get a realignment.
Raising the rear can be done with AALs or blocks, neither of which are very expensive.