I just ordered my catted X and headers from superchargers4less.com - so far so good. Waiting on my parts, should be in next week. They were the absolute cheapest out of every single site I searched (ebay didn't carry my part #'s) They have both catback types, but stay away from the BX - SS beats out "aluminized steel" IMO and almost everyone I know agrees. Don't know what happened with the quiet thunder though.