Swaybar Upgrades

[blu falc]

Firstly, I did a search and it doesn't seem like this has been covered at all.

What swaybar upgrades are availble for AU's with IRS? I have a Fairmont Ghia series 1 and the body roll around corners is terrible. The Shocks are still in good condition and I will be lowering it soon but from experience I know massive improvements can be had with just slightly thicker swaybars.

Whiteline do an upgrade with both adjustable and non-adjustable heavy duty swaybars but are there any other (cheaper) options? Did TS50's or XR's get better swaybars? Are there any other suspension companies that do an upgraded swaybar?

I am more interested in upgrading the rear swaybar because the car understeers worse than the other falcons I have owned or driven.