I've been running single straight pipe on my 35 Avatar for over 10 years because I was not going to use anything but an original 35 muffler that I could afford. Thanks to Michael Driskell @ Third Generation Automotive, I now have an original muffler, but I hate to lose the sound of the straight pipe. Most folks love the sound of my car.....except my wife. She thinks the loud exhaust has caused my hearing loss