Fordem is right, but a way around that is take your measurements call Airlift and they can tell you which ones to go with. I just put a set on the rear that were built for a Saab 9000 because with my 2 1/2" lift that gave me the correct diameter and height. I hope to need them for a heavy load like an elk stuffed in the back, but I really got them for when I have opposite corners in the air. I found that the rear suspension travel would allow the rear tire to stuff into the wheel wells and rub hard, so they are my soft bump stop. They were $80 +/- and way easy to install. DJlantis just did his also. I don't remember who turned us on to it, but they drive a really clean red tracker. I saw a picture of his loaded heavy for a trip in the scavenger hunt game, nice guy.