cratenginedepot also has a suspension kit, which is a complete FE5 kit. However I would recommend what I did and just get the struts, shocks, and front swaybar components. Then go aftermarket for a good set of lowering springs and the Progress rear swaybar. At the moment the current 22mm rear swaybar from Progress is not enough to overcome the FE5's 24mm front bar. They are currently in the final testing stages of a new 25mm bar that I believe will complement the 24mm front bar nicely heres a link to the cratenginedepot.
Cobalt Suspension - Crate Engine Depot
2006 LS coupe, manual, Victory Red
Sportlines, FE5 struts, shocks, front swaybar, Progressive 22mm rear swaybar, Airlift load assist rear airbags, TWM ST shifter, smoothed TB, LSJ exhaust, debadged, demudflapped, Yokohama AVID Touring P195/60R15's. Soon to come 17x7 Motegi Tracklight 1.0. Best to date 15.402 at 90mph
"No friend ever served me, and no enemy ever wronged me, whom I have not repaid in full."
Lucius Cornelius Sulla