Ron,
Your Pacer front suspension came with a "stabilizer bar", unless it was removed during install onto your truck.
See the screenshot below and look at your "stabilizer bar" mount brackets and tie bolts (both sides of the suspension).
It's possible that after all the years you have had the unit installed that one or more of the mounts or tie bolts has failed and isn't keeping the bar firmly attached to the suspension and doing it's job.
Your suspension is due for a closer inspection/evaluation and possible maintenance.
Guitplayer,
That's the right "original style" unit for the truck, but won't work with Ron's later "Pacer" front suspension (it aint stock).
