thersa few threads where guys who are lowered needed them. then a bunch of threads where they had the inner tire wear and put them in.
hit google, how to install camber bolts on a grant prix. add "grandprixforums.net" at the end. or the start. see what pops up.
its truly is as easy as removing the top bolt, loosen the lower bolt, then installing this cam bolt. it replaces the top bolt from the strut to the knuckle.