I have the Coupeking exhaust on one of my coupes and can say that it is beautiful and it sounds great. On my other coupe, the previous owner had removed the front muffler and center resonator and replaced the replaced the rear muffler with a small, glass pack type magnaflow muffler. The system was loud, as in Harley Davidson LOUD! Good sound for a Harley (loud pipes save lives), but not for the coupe. I had a young guy pull up to me at a traffic light one day and ask me what I had under the hood; I knew right there the exhaust was selling tickets that car could never cash. Needless to say, I installed a factory front muffler and rear muffler and the car now sounds as it should, albeit not as great as the CK system, but much better than it did. Not sure exactly what you are going for, but the CK system is hard to beat. There is a stainless system sold by W&N that I looked into, but I asked around and it seems that system was built for the 2800CS, which was a little more restrictive than the 3.0 CS system in stock form.
