Hi, all. I ended up buying a new catalytic convertor when all I needed was an O2 sensor. I got lazy about sending the cat con back and went past the 30 day return period for the part. So, my loss is your gain - I'm just looking to offload this part.

I bought the part from autopartswarehouse.com and it is a benchmark direct fit OE replacement for bank 1 (side of engine nearest passenger compartment).

I paid $275 for it and have yet to take it out of the box. Current price is $249.96. I will sell for $200 plus shipping. Shipping should be less than 15 bucks on something this size/weight.

The part is here:
http://www.autopartswarehouse.com/sk...%26+Drivetrain

P.S.
You can tell by the image that this fits the "rear" of the engine based on the elbow/flange location and the two mounting tabs in the picture. If you narrow down to the x--type only catalytic convertors you can see the difference between the two. Please be sure you are buying the right part for what you need!