So I love my W&N exhaust, it replaces the stock setup with the front, small center, and large rear mufflers. Sounds nice, but I wanted to "kick it up a notch" so to speak so I brought my car to a custom exhaust shop and had them make a piece out of stainless (with an O2 sensor bung which I also have in the stock piece) to replace the small center resonator. This section bolts in so no welding needed and I can replace the original in about 10 minutes. It sounds even better now, not loud or annoying, just a little more throat/burble/Porsche 928-esque.
Stock piece:
Replacement pipe:
Stock piece:
Replacement pipe: