When I arrived at my destination today, I found a black plastic trim piece on the driver's side floor. It has a Porsche sticker with the number 996.551.101.00 EAQ and VKL S-TRAGER LL SCHW on it. Where does it go? We've looked around, but don't see anything missing. Anyone have an exploded diagram that can show us? This is a 2002 Boxster S, Left Hand Drive.