A back shot. Not the exhaust. I still don't know what exactly that exhaust is. I think it's just a canister muffler on the stock piping. I haven't been able to get the front bolts off the cat to do a direct across-the-bore measurement, and I don't trust my circumference-and-math results. When I get the car to a muffler shop that will actually touch anything having to do with the cat, I'll have those bolts free and will know. Plus, I will be able to run open dp, which I might just do all the time.

Also notice that those wheels are not stock, and are not alloys. They are honest-to-god 14" steelies. Like, wtf? I still can't comprehend the thought process behind putting 14" steelies on a car that came stock with 16" alloys.