Ok i've been searching and searching. I can't make up my mind between the rock krawler 3.5 mid arm or the 5.5 long arm. I know one is a long arm and the other is not. I guess what im having trouble with is i am going to be driving the jeep every day of the week. And im wondering what the handling differences would be compaired to stock with the 5.5 long arm? I've also heard that these lifts actually give you more lift than advertised. So what do these lifts actually give u? And for those of you that have the 5.5 lift is it too much of a lift to drive on the street every day? I will be running 37" and 5.13 gears. And the rig will see a very good amount of trails.
Actually, RK offers both the 3.5" and 5.5" in an Long Arm setup. With the 3.5" you will have plenty of room to run 37's. Long Arm rides better than short arm, less lift rides better than more lift. With more lift you're looking at increased body roll, squat, and dive.
There are two options for the 3.5" long arm:
1.) Standard 4-link: essentially the same as your factory suspension just relocating the frame-side control arm mounts for improved geometry. It will be a good all around performer and provide you with the best on-road handling.
2.) 3-link rear end (triple threat long arm system): Utilizes a 3-link rear end suspension. It does away with the two upper control arms and replaces it with a single upper control arm in the center of the axle. This is arguably one of the best performing rear suspensions out there....off-road. It allows the rear axle to travel without binding so it has superior articulation compared to traditional 4-link designs. It won't be as nice as a 4-link for daily driver duties (increased body roll mainly) but I doubt you'll find any issue with it.
If you plan on installing either of these yourself, I hope your welding skills are up to par. The 3-link will require more welding as it places a truss over the differential of the rear axle. For my $ I'd go 3-link as you've said it will see lots of trails...there won't be much out there that can compete with you. Also, if you're spending this much coin on your lift, I'd go ahead and have a look at doing the coilover upgrade for the front suspension. Long travel shocks are expensive as it is, and when you delete the cost of the coil springs from either the 3.5 or 5.5 kit, you don't spend a whole lot more for significantly better performance.