My Cousin has a base 1999 with ~ 90k miles. The only thing he has done was pay the dealer to tweak the top when it was out of sync. He has never visited this nor any other Boxster Forum and couldn't care less, He just drives it.
I wish I had his non-interest perspective. I replaced the IMS bearing (on my old 2002 Boxster S) at ~ 30k and the original was as tight as a drum, no pending issues whatsoever. I read, I freaked, I reacted and spent money I should not of, live and learn........