Option #1: Stromung. Great stuff, but a tad expensive for a catback at about $550 with midpipe.
Option #2: Custom catback from Nate using a Magnaflow muffler and stainless tubing. He can build you a copy of my exhaust in stainless (mine's mild, it will be toast by January up here

) for about $300-350.
Anything JC tells you in this thread is rice.