My truck's body mounts are original, and greatly deteriorated. In some cases, almost complete missing. I guess this means that the body could be slightly sagging or misaligned? If so, then it would be foolish to install a cage before I replace the mounts. I'm assuming that welding/bolting up the cage would stiffen up the body in the wrong (i.e. current) alignment. Replacing the mounts after the cage could be a problem if the cage prevents the body from flexing back to the original shape. Is my reasoning correct? Are there any other repairs that I should consider before installing the cage (probably S&W)?