Do you know Pelican has a link (see below), call Pelican parts dept for drop ship to your door. Or if want dealership documentation/install, may call Bob or Jeff at Sunset Porsche in Beaverton Oregon. Either way looks like its a good idea to drive it to Beaverton to pick up oil filter and crush washer, you see.
Some guys have good experience with the cars, others have lots of problems, where how you drive it and service it really comes into play.
PelicanParts.com - Porsche 996 - Exhaust
There are other manufacturers, if he doesn't like any of those there are a few more performance exhaust options like
::TUBI STYLE.it::
Oh yeah and don't forget to let us know the speed, yes ofcourse with the top down.
Regards,