I could not find much info on the details of installing a muffler. Hopefully this will help if you have to do the same thing
This was physically difficult for me to do, a lot of being under the car, which I don't like.
Note: The red bentley manual as a good exploded view, it also has the torque spec for the pipe clamps ... although I seem to have lost it.... you can get them from amazon here
Step 2: Document part numbers
Step 9: Remove the old down pipe
Will reuse the heat shields.
Not sure if there is a small crack in the exhaust manifold -- does not look like damage, but does not seem like it should be there.
Step 14: Chip and cut away all the rust
I used an angle grinder with a cut-off disc to cut back to good metal.
To weld you need a clean surface, so go around the edges with a wire brush disc on the grinder.