I got my 3" altered atmosphere cat-back on the car today. It was built for a cobalt but fits the redline just fine with one small exception. The hanger on the muffler doesn't line up with the hanger on the car and in fact there are 2 hangers on the muffler but only one on the car. Its no huge deal for me because I will just weld it on. The exhaust is decent looking. The welds are all mig welds (some of the flanges could be bad tig welds) and they aren't the greatest looking but are functional. The opening of the fart can at the end is huge! I was sticking my arm into the opening. I would prefer a smaller opening and figure I am gonna get labeled a ricer now around the streets. The car is loud but sounds decent. It sounds better than your typical honda with a fart can on it but not quite as good as my Formula I havent driven it yet as I have a small exhaust leak I have to fix first and wanted to take a small break. Another thing to note is I ordered the exhaust on the 2nd and it just arrived today. They gave me a couple different dates that it was supposed to go out and they got delayed. They said there welder quit on them and they would give me a gift certificate for the trouble. I never got it which dosn't really matter because I don't have anything else to buy from them.