Why is it that some of the TJ Lifts only include springs, such as that of a 3" lift, others include only Lower Control Arms and Springs, then you get to the Larger Lifts such as 4.5" and they include both Uppers and Lowers? I'm considering getting a 3" lift, with the springs only, but what problems will I have with the lift as springs are only included (ie...the angle of the arms)? Should I consider getting Lower Control arms too? Are the lower control arms for a 3" lift longer than that of a stock arm?
Thanks, Pete