Fly-high with the "JET STYLE" tailpipe plug - dual that. Looking good I admit and cheap-cheap! Needs changing every 24months I'm guessing tho... there are chancesthat it is a low cost mfg item/material. Never seen one and I can't tell from the pic
Porsche 986 Boxster Exhaust Tips Jet Style 1996 2003 | eBay
There are tons of those around, they are just overpriced for what they are really (stainless steel?). Just google keywords boxster 986 muffler tip, dual tip, muffler tailpipe, etc