Originally Posted by pnewman43
I wanna lift because i want it to be more off road capable.
A lift alone will not necessarily make a rig more offroad capable than an unlifted one. A properly selected lift can improve articulation/wheel travel, but not all methods of lifting will do that. As far as the effect of the lift on the undercarriage, your differentials will still be the same distance from the ground as before, and will still effectively be one of the lowest points on the vehicle (assuming no change in tires). And, a lift will raise your center of gravity, thus becoming one detriment to offroad capability (however minor that is). It's a trade-off.
A lift will allow you to stuff larger tires under the rig, which WILL increase ground clearance to the differentials. But, one can go up to 37" tires on the JK without a lift whatsoever!!! (The caveat is that some other things must be changed to accommodate 37" tires without lifting, and there may be some minor rubs). 35's would be fairly easy without a lift (only fender changes and cutting the pinch seam).
There is no doubt that a good lift can improve certain offroad attributes, but at a cost to other attributes. I guess my original question in this thread still needs to be answered: what exactly do you want to accomplish by lifting? Your answer will allow folks to point you in the right direction.
I'm a fan of low-center-of-gravity builds, and I plan to improve my Jeep's offroad capabilities while trying to avoid lifting unless absolutely necessary; and then only as much lift as I really need, and no more.