Jaay,
Interesting info on sway bar sizes here:
http://www.cb-racing.com/boxster_030.html
This info led me to order the M030 front sway bar for an S and the rear sway bar for a non-S because it had a higher spring rate than the "S" bar and I wanted to tighten up the rear a bit, removing some understeer. I installed the stiffer bars without changing anything else and noticed a big difference.
Just today I received my ROW M030 springs. Coming soon are the Bilstein Sport shocks ordered thru Tire Rack. These are supposed to be the same shock as Porsche OEM, but at a better price.