what you guys think as far as catback corsa sport or touring .I have a touring in my 2003 sts seville and its pretty loud for a touring kit .I also want to get a cold air intake any thoughts on whats good these days the volant kit or k&n and any other recommendations .Im also looking for the rear center counsel center part i guess this one the guy had it pealing off which is pretty common thing .any good places to pick one up except junk yard

thanks