Well, after much consternation and indecision, I finally chose an exhaust for my Crossfire. I purchased a Dynomax 17733 muffler, a Wicked Flow Big Slant tip, and took them to Muffin Muffler in Austin to have them installed. Troy constructed a 2.5" pipe from the flange, welded in the muffler and constructed the hangers, and the result is below. Muffin is the best muffler shop in Austin. Tom and Troy are the best!