99, 00, 01 and 02. I believe the 03 is when they changed IMS bearing design and began having a problem. The TIP's seem to be less prone too. You will need a 60K service done, which can cost $1200-$2000 depending what all is done. At a Porsche Indy shop will save a lot of money. Just be sure they have a good reputation. Have a Porsche dealer do a PI, cost is about $120 and you will know where you stand.
