I believe that is all you need. I have never installed one myself but I have heard good things about them. Considering buying one this spring for my cj. I think its one of the best lifts for the $. If you put one on send me message of how you like it. I talked to a couple of other guys that have them on and they think its a great lift for the $. The only negitive I see for me anyway is I would like to run 33's but with this lift prolly only run 31 with no rubbing. One thing I did hear though is if you run a hard top you going to want to add a leaf in the rear or you will get a little sagging.
Don't forget longer brake lines, and new shackles are nice if you can swing them, I broke 6 of the 16 shackle bolts doing my swap. As for the sag, clic on my pic link and go to page 5 , bottom pic. Thats how mine sits w/the hardtop, spare and 2 gerry cans (empty).