Hi, my name's Charles...I'm a modaholic!
Yeah, it's the stainless and I was aware of Stormy's situation. I also followed Gibson's explanation and it made sense to me. They also have a lifetime rust through guarantee, so I don't feel there's any reason to be concerned. The system is very sturdy and well built and I don't give a rip if it turns brown...it's under the truck.
I noticed when throwing out my old exhaust that it almost had a rust hole in the muffler, which surprised me. I drive a lot, so there is no moisture sitting around in my exhaust.