here's are a couple of pix of my new WS2 muffler, custom fitted to fit the 6th gen sedan ... still using the Greddy catback... just changed the muffler... sounds deeper, and resonates a lil more in the cabin... i'd have to say it's in between the Greddy SP and Apex'i WS in terms of loudness... and performance wise, the car pulls better now in the first 3 gears compared to the WS1