I searched using "Boxster dash". I saw the one in the link below, which I see now isn't a "Buy It Now" item, so good luck with it. I also saw another one that was either starting at $59, or maybe buy it now for $59, but I can't find it now.
Best of luck,
ddb
PORSCHE arctic silver center dash trim 911 986 BOXSTER 996 2002 and more NR | eBay