2006 CS manual
Just installed my chrome ones this weekend on my 987.1, I did the one muffler remove method took me less than an hour, is easier with the wheels off and some PB blaster, I flip the clamps so is oriented like OEM nut facing down. I like the look of dual tip much better than the OEM snout look. As for for the sound, there is definitely a difference more noticeable when cold and deeper into the throttle. At cruising or freeway there is no difference, even with windows down. So far I enjoy this mod. Good quality stuff too.