Having the axle reconfigured is one way, SId's is the place to go for this. They also make lowering spring packs, the arch is reduced while keeping a full number of springs in the pack. There are also drop spindles, these would replace your stock spindles without the need to replace springs or pull the front axle. In the rear, lowering blocks are probably the easiest and most affordable option. Removing springs from the spring packs has been done forever, but I have seen many warnings about this changing the structural integrity of the spring pack leading to failure of the springs.
