I just ordered a Hellwig. Race-mart has a great price, but they charge $25 for shipping. I ended up having summit price-match them since they I needed something else from them and they ended up waiving S&H on the whole order.
Wouldn't the g-bodies have rear axle lateral movement w/o the OEM-style swaybar, especially with the flimsy stamped lower control arms ? Upgraded lower control arms with stiff bushings would be a good idea with the pro-touring type bar.