Well the heading explains all. I was hoping that we can finally have a high horsepower car with a proper muffler hanging off the back. The answer for this question is probably buried in some thread but after searching the thread (yes I really did try searching) I came up empty or maybe I didn't put in a good enough word to search it. I would be mad if they added spoilers and didn't even bother to add mufflers. If you can change your muffler, can you post some pics as well for me and other fellow GTP members? Thanks. 👍