Well, after 2 months of driving with the Ansa Sport muffler, I went back to stock. It was fun at first, and I'll miss the popping and throaty sound, but with my ears I'll be much happier with my stock. Perhaps in the future I'll upgrade to the IE system.
In addition to removing the Ansa, I also installed the rear IE sway bar I had sitting around for a few months. My stock sway bar bushings were almost non-exsistant. I used the search function to figure out the install. Sanded down the flat side of "D" bushing a bit, and used the longer bolt method to tighten the bar down. Probably took me 1.5 hours to finish the project. I'm going to upgrade my fronts shortly.
While I was under the car, I took a picture of the "S" on my diff. Just thought it looked cool.