One problem related to sway bar has been reported for the 1998 Ford Mustang. The most recently reported issues are listed below.
Rear sway bar is hollow and the ends are pressed, that's where it snapped. Suppossedly this is a common problem so I wanted to report it in hopes that Ford will someday recall it. They already have produced a new piece that isn't hollow and supposedly much stronger, so they must know there is a problem.