Only major things effected by a body lift are the fact you can't tow with your bumper. Meaning if you have a trailer hitch that bolts to the bumper instead of the frame, you can't tow with it. If you have a hitch mounted to the frame, it is not effected. Frame mounted hitches do not move with the body lift.
I have also heard the front tow hooks are unusable with a body lift, but don't know as I don't have them on my Sport.
Body lifts do not effect suspension at all. They just lift the body off the frame. It requires installing spacers between body and frame, brackets to move the bumper up, a ground extension, bracket for brake distribution block, bracket for spare tire winch, and steering extension.
There are instruction on Performance Accessories website if you want to look through them while you're waiting on it to arrive.