I have a 2 door JK and a friend has a JKUR and he removed factory springs and they are the 18/59 part numbers. I hear you can install them on a 2 door and get about 2" lift from it. Does it require any other parts are do I just put them on and everything is good? I don't mind if I have to buy track bar relocate or shock extenders. Just would like to know what others were successful with.