Does anyone know the size of the factory front and rear sway bar on the SS. Eibach has their Anti-Roll Kit and the front is 22mm and rear is 20mm.

I believe but may be wrong that the stock front anti-sway bar is 19mm...the rear bar is welded to the suspension, I'd be interested to see how this bolt in aftermarket works.

The GM Media Guide for the 2005 Cobalt in the Cobalt SS Sueprcharged: Contents Under Pressure section said: "The SS Supercharged's standard FE5 suspension features aluminum L-shaped front suspension arms, sport-tuned struts and a 24-mm direct-acting front stabilizer bar. The rear suspension has monotube shocks and a 22-mm stabilizer bar." I don't know if that is the production setup, but that is what Chevrolet said they were going to do. -- laborsmith