US Monkey, if you're set on a '99, why not buy from a reputable forum member that has carefully maintained his car?
Not sure why he posted it twice, but here are the links:
http://986forum.com/forums/general-discussions/35879-selling-99-boxster.html
http://986forum.com/forums/boxsters-sale-wanted/35807-fs-1999-boxster.html
I'd be MUCH more comfortable buying this one as opposed to the one you were looking at. It will be well worth your plane ticket to fly out to pick it up. And the drive home? Going to be freakin' awesome...