your shock absorbers are supposed to restrict axle travel to retain the springs, I'd check if yours are the correct items.
Missing the rubber pads wouldn't help either..

I've just had a good look thru my 98-99 service manual, and it doesn't have part numbers for anything at all <img src="/forums/images/graemlins/zombie.gif" alt="" />

Long a$$ 2000 Sporty, auto, 5.38 gears, TF front locker, 4"+ front lift (Kings +40 springs, 50mm spacers, 1.5" diff drop), TJ 104 rears 3" + 50mm coil spacers, 1.5" body lift, 31/10.5r15's on 15x8 Kings (ET-13), WARN manuals, Smart Bar, spotties