Alright, I don't know exactly what you call it. But on the 2G GS we have a side skirt (??) that the RS doesnt have. It's 2 pieces...one piece goes all the way along the bottom of the door, and the other piece looks L-shaped from the front, and wraps around into the wheel well. I'm not sure if these get replaced when you do aftermarket side skirts or not...but if they do, and someone has the passenger side set that I can buy, I would REALLY appreciate it. I'll pay $40 if I need to paint them red, or $60 if someone has them in red. Not maroon, I need RED. Must be in decent condition. Don't need the retaining clips, either.