I used Western Chassis spindles in the front. Unlike some other brands, they allowed my 15x8 rally wheels to clear the lower control arms.
In the back, all I did was install dropped hangers, which were good for 2". HOWEVER, I had to use "wedges" between leaf springs and axle to correct the drive line geometry, and that required longer spring locator pins, which I had to make. Still, I just couldn't bring myself to cut the bed support rails to clear dropped shackles.
Gotta tell you I would seriously consider using dropped leaf springs next time. Removing the bed with help of a few buddies was not too bad, but dropping the gas tank was a real PITA, not to mention drilling out the hanger rivets. And if you're going to drop the tank, plan on replacing the filler hose and vent hose when you put everything back together.