A downpipe adapter was constructed to connect the turbo to the rest of the exhaust system. As you can see from the picture, there is nothing commercially available that would have worked, and a regular TII downpipe would not fit due to interference from the firewall. This downpipe adapter is made from a 90 degree 2.5" steel plumbing elbow, connected via a short piece of 2.5" exhaust pipe to another 2.5" plumbing elbow, this one 45 degrees. At the 90 degree end is the three point exhaust flange for the turbo, and at the 45 degree end there is a two point flange for the rest of the exhaust system (in this case, a Bonez Superflow downpipe and cat). The construction is messy since welding the thin walled exhaust pipe to the thick walled plumbing pipe was very difficult. I kept blowing holes in the thin stuff, so I gave up with being neat and just started piling the weld on there. Regardless of how it looks, the construction is solid and there are no leaks. You will also notice a bolt has been welded onto the 90 degree bend after the turbo. This is the mounting point for the oxygen sensor.