If you're looking at the Rancho QuikLift, I think the 4x4 lifting strut will give you too much lift. They also make stock replacements and the stock heigt 4x4 should be okay. I noticed my upper control is marked 4x4, so there is likely a limit to lift before you start to have alignment issues. If the struts are the 9000 series, they are adjustable so you can tailor your ride as soft or firm as you like.