Taking a look at the walker 56182 for my vanilla RWD '04 sedan and I'm noticing it has an extra muffler looking thing in the middle, where my car doesn't when I'm looking under it. I've confirmed with a few sites it fits but it makes me a bit nervous. On the other hand, the AP Emissions 68486 looks closer to the one I got but I suspect the walker (a better name brand) might produce a quieter ride.
Here's the photos:


Walker

AP Emissions

Does anyone have experience with installing the walker/can advise on fitment?