Or have one made from any exhaust shop. Stainlees steel look is great but and expensive. I like the look but they do not make one for the H6 and then again here with all the snow and de-icer it would be trashed in time. I had a cat back made and sounds great.
You can also go with a catback made by Stromung. Boxer4racing.com should carry them, but you'd have to e-mail them about the availability, since the exhaust isn't specifically shown on the website. I'm considering to get the Stromung unit or to getting a custom exhaust made with a Magnaflow muffler & resonator for my 03 Outback.
I had a 2.5inch cat back made for me at a shop with a regular magnaflow muffler on my 2002, i then got the tsudo uel headers online that are 2.5inch that come with what they call a high flow cat. sounds really good but the flang the shop made me was not meant for my new headers, so i have a small exhaust leak. if looking for a full system i would mount the headers first then get the cat back so you wont have any major exhaust leaks.