Isn't the stock rear bar in the 03+ models the same as Zanardi? Someone posted this... I have to find the thread. Does anyone have any idea of how the SOS, Comptech, Dali, and Type R bars compare?
Dave,
A while back, I started a thread that talked about the rear sway bar. My '02 has the larger 19mm diameter rear swaybar, but the type-s/Zanardi might have a thicker wall.
As far as reducing body roll, stiffer spring rates will do more than a sway bar could ever hope to do. The Zanardi suspension might be worth considering as it has both stiffer spring rates and it slightly lowers the car. I'm going to test a Zanardi suspension in two weeks. I'll let you know my impressions.
Steve