Kinda rare but you can have a decent one fabbed. I think BFI makes one? It's like 400 dollars though
Dual Outlet Downpipe are rare. So I made my own downpipe. You can check out my pipe along with some instructions as to what I did in order to fab the pipe. I don't have a welder so I had to rely on a muffler shop to weld it up for me. But it tuned out great in my opinion. Here are some links to my page on Car Domain.
Leave me a comment and let me know what you think.