I already have a remus rear muffler installed in my 1991 190e 2.6, and I love the way it sounds and looks. However, I was never able to find a preformance center muffler. I have found several oem type center mufflers available, but no performance ones. My original center muffler has about had it. If you come across any information about a good center muffler while you are looking for a good catalyst, please let me know. If I run across any good catalyst info, I'll do the same. Divide and conquer. Good luck. Wayne Reynolds