The replacement control arms might not be long enough for a 4 inch lift with them being designed for a 2" lift.

 

Yeah Whowey I figured that later. They don't look all that much longer than stock but I figure if the stock control arms can handle 3' BB then thier 2 inches plus 2" should work.
As I was telling Howler I have friends with machine and fabrication shops who get some really nice stock in so I wanted to get the measurements off another pair and make my own.
I saw a Pro Comp set I really liked but then again some of the stuff I've used on Chevys and Fords may be overkill for a little Jeep.
Some parts just look so flimsy to me. Aslo going by what people are selling used because they upgraded.

 

Ask and you shall recieve