That rear bumper is unusual... it's kind of Carrera 4Sy. It has vents, and is arc'd
inward towards the bottom. The 987 version looks better than the 986 if you ask me.
For those that wish to be spared the digging around...
http://pagesperso-orange.fr/d.moris/P_Hardtop_Boxster_986.html
(Sidenote: That site is what happens when PRINT people try WEB DESIGN, ug!)