Yes, I have, but are they really that much cheaper? I see chassis engineering has a ladder bar kit for $740 complete with everything, Cal Tracs aren't much less, but they are less to install I guess. Someone that had this car before me put frigging leaf spring sliders on the back so I would have to get rid of those and get shackles back on there. I don't know, but I'm going to do something, I'm sick of fighting with these super stock springs.