do one side at a time, front or back.
jack it up, jackstands,etc
disconect sway bars
use a jack on either side of the knuckle to drop the oppisite down as much as you can.
use a big pry bar or 2 and muscle that SOB out.
you may have to remove the stock bump stop, just pull out the rubber peice, there is a bolt up in there, remove that, slip the spacer over it, re-assemble.
Some people will tell you to remove the track bar as well, personally i prefer not to remove it cause it's usually such a pain in the *** to muscle it back in if you dont have an adjustable.
Also, i would reccomend renting/purchasing a Spring Compressor from your autozone store ( rent for free ) or buy one from harbor freight for 20 or so bucks. Makes the spring a hell of alot easier to get into place.