If you guys are considering this job... my advise is GO FOR IT. Big difference in handling. Rock steady driving highway and even when doing those shaper curves at lower speeds.
Can't tell if it's only the swaybar, the new control arms or the combo. My bet is both are pretty important. The boxed SSM control arms with poly bushings is a massive upgrade over the stock open flexible ones with plain rubber bushings, and the Hotchkis swaybar is just impressive.
Will also do the front swaybar upgrade to Hotchkis as this result is just amazing without sacrificing comfort.