Check this out. RSM Racing ALREADY has a supercharger setup for the 2.2L Cobalts. Doesn't surprise me though, they probably just modified the Cavy's S/C setup. 60hp increase claim. That will be right on target w/ the SS's hp! I think it would be cool! Here's a link:
RSM Racing S/C for 2.2L Cobalts
They also already have brake, suspension, carbo hoods and trunk, and other upgrades as well.
Also look for a stage 2 to come out soon they generally claim around an 85hp increase on their stage 2's! That would be on par w/ an SRT-4!!!