I have for sale my original s-line chrome( Stainless steel )tailgate trims. They came of my 2006 "56" 2.0TDI 170 Sportback, as i think these came as standard on the s-line and 170 sport models. These should fit over 140's and 170's with the twin "straight" pipes and not downward facing pipes.
They simply slip over your current pipes and are spot welded at the back to hold in place.
They are in pretty decent condition for a late 2006 car, but my car has only covered 40,000 miles. I have given them a quick clean and have come up quite good, but with a bit more effort, I am sure someone could get them like new.
I think audi sell these for aound £60 for the twins, but I am looking for £25 delivered second class royal mail recorded, or £20 collected.