The SS/SC nor the SS/NA lower rear lips will fit on the LS or LT rear fascia.
The lower moulded area of the LS/LT fascia is too small even for the SS/NA fascia (I tried without luck -- SS/NA lip to LS fascia). You'd have to cut the panel or cut the fascia to get them to work. The SS/SC rear lower lip is even more complicated to attempt to install it on a LS/LT rear fascia.
The SS/SC Front OR rear lip WILL NOT FIT a ls/lt cobalt. YOu need the SS/SC bumpers that has the holes for the lips to attach to. They simply will not attach to a ls/lt bumper without getting it molded which is pricey.
The SS Sideskirts fit ANY model cobalt coupe or sedan.
The SS/SC Front Bumper fits ANY model cobalt coupe or sedan
The SS/SC Rear Bumper Fits Any COUPE Model cobalt
The SS Sedan Rear Bumper Fits ANY SEDAN Model Cobalt.
A most should make this post a sticky as every week its the same questions.