I've got a Performance Accessories 1 inch body lift

An advantage of the body lift is it does not raise the height of the engine, transmission, transfer case, or frame. Normally these are the heaviest parts of your Jeep. A body lift is better for your center of gravity than a suspension lift, but body lifts tend to allow more flex between the tub and frame. The more you lift your body, the more flex you get. A lot of flex will eventually rip body mounts off of the tub.

When a body lift is installed you will need to be careful that the radiator and shroud are properly positioned infront of the fan, so they don't rub. In my opinion a body lift can be a complement to a good lift kit, but is not a substatute. http://www.redjeepclub.com/redjeepclub/tjqa.jsp