I had Boulder Muffler do both my snorkel bends as well as my exhaust and have sent a few other people there with not only excellent results, but also friendly service and good prices. Highly recommended.
Big recomendation for Jeff over at Boulder Muffler! I had him put on a turbo muffler and tail pipe when I developed a crack just aft of the original muffler. My 90 definitely seemed to have more get-up and the mpg stayed constant at 17.8 but at approximately 2100 rpms, the resonance was unbearable in the cabin (yep, it's a SW). I called Jeff and he swapped out the muffler for a stock unit on the spot and only charged me the price difference on the mufflers. Much quieter. Class act in my book and I can't recomend him enough! I'm taking my SIII there next week!