I scored some JK rubicon unlimited shocks to swap out on my LJ. I've heard these are gas charged monotube shocks (like bilsteins) but I cannot confirm that. I tried to get them from a regular JK rubicon because the valving might be lighter, but these shocks are hard to find because of the high demand. I believe that the rubicon shocks are better than the standard JK shocks. I paid $65 shipped for all 4 shocks to replace my crappy skyjacker hydraulic shocks. I bid on a few on ebay, but they went over $100 shipped. I want to get some quality shocks, or coil overs, but I don't have $1000s to blow on the jeep right now so these can tide me over. Both the front and rear JK shocks were within 0.5" of body length and extended length of my skyjacker shocks that came with my jeep (I'm not sure what size they are).
The install was pretty easy, 2hrs tops, but I could do it again in about 45min. I needed to swap the bar pins from the old shocks to the new ones in the front. It was pretty easy with a press, but you could probably do it with a hammer. Its easier to push the pin from the old shock into the new shock while pushing the bushing out of the new shock. We tried pushing the entire busing out of the new shock and then inserting the barpin, but that was way harder.
The rear shocks needed to have the metal bushing on the bottom ground down so that its flush with the rubber (~1/4"), but they didn't need any bushing / barpin swapping. The bar pins have a bit larger holes, but the stock bolts work fine.
The ride is WAY better. There is less pitching on acceleration and deceleration. It feels more stable and solid, and the best part is that the kidney kicking bumps are smoothed out to very mild jolts. I should have down this when I got the jeep! Best $65 mod yet! Thanks to my brother in law for telling me to get the JK rubicon shocks (he swapped them on his WJ and it rides like a caddy).