even if the did work, I wouldn't want them because they are built for a 2.0 liter 4 cylinder. the supercharger on the cobalt is 62 cc's while the supercharger on the grand prix is 90 cc's, so like I said, even if it would work, it may not do enough to justify to cost and labor to install. it would definitely not be a simple bolt on either because both cars are different.
even if the did work, I wouldn't want them because they are built for a 2.0 liter 4 cylinder. the supercharger on the cobalt is 62 cc's while the supercharger on the grand prix is 90 cc's, so like I said, even if it would work, it may not do enough to justify to cost and labor to install. it would definitely not be a simple bolt on either because both cars are different.