rj,
Had the swap done on my '02 Boxster a few years ago. It is an awesome project, albeit an expensive one if someone else does it for you. I had mine done by FVD in Florida. They bought a crate motor from Porsche and did the conversion both in FL and Germany.
See the following link:
FVD 3.8L Conversion Into Member's 986 Boxster! - 6speedonline.com Forums
Dave