I read you were thinking of a Flowmaster exhaust? Just for your consideration you will not be pleased with it...I was working with the owner of a performance shop and he said in comparison to the aftermarket exhausts out there Flowmasters are the worst, cheep junk is what he said. And they are actually worse than stock on the new camaro and had dynos to prove it. The stock exhaust was designed by Borla so it is very good. I upgraded my exhaust to Borla Catback Sport and I am pleased and my tune shop said it is one of the best.