Hi new to the site but just wanted pass on an experience. I have a 63 plate 500s but really liked the look of the twin pipes Arbarth. After a bit of searching it seemed quite a simple swap over. People were saying just get a reducer chop the center pipe weld on reducer and fit all together. After a bit of thinking I thought it seemed over complicated. My solution was simply find a garage with flailing machine stretch the end of my center pipe to Arbarth size and literally clamp together. Very neat and simple, fortunately my car even had the hangers from factory. Just wondered if anyone has used this method.