Magnaflow is supposed to have a complete system, turbo-back, at the end of March. Joe Donnelly, if I am not mistaken, said that if you are not going to get real creative with a lot of power, that the muffler "only" replacement would work just fine. Magnaflow makes a 20", 24" and 30", straight-thru muffler, I believe. Joe, also, mentioned that He liked a muffler that did not have louvre's in the pipe. He preferred just the holes on the inside pipe. I think it"s because the louvres get in the way of the smooth flow of the exhaust. The Magnaflow has the holes in the pipe. The Magnaflow system is supposed to come with the 30" muffler. Hope this helps. Joe.