For tail lights, I specifically recommend Suncoast Porsche on eBay. They're the lowest priced
genuine lights I've found. (~$160)
Suncoast's eBay store
Somebody correct me if I'm wrong, but I don't think Porsche makes
smoked lights. All the
smoked lights I've seen on eBay are NOT from Porsche.
For front corners, try departstop. (~$45)
Departstop's eBay Store
If you're like me and like to keep things authentic, for HELLA front side markers, try either Suncoast Porsche or
getcoolparts.com. (~$17 each)
As for headlights... skip normal clear lights and get a set of Litronics.