All '01 Boxsters came with the inside top liner.
Carefully examine all the interior "soft touch" trim. My '01 had most of the interior parts replaced by the dealer under warranty because the finish was flaking off - a few pieces multiple times. I think 2001 was a bad year for interior trim from what I can tell.
If the battery is original, expect it to die in the near future. Tires will wear out, and at 40K miles, a lot of people have to replace the MAF, AOS and motor mount. I'm still on my original motor mount at 56K miles, but have replaced the AOS (dealer under warranty) and MAF (easy, but intimidating the first time you access the engine). You will probably need to clean the throttle body in the next 10K miles. Depending on debris in the air, you might have to take the front bumper off and clean out the radiators.
If the car hasn't had an alignment for a while, plan on getting that done or replacing a lot of rear tires (check wear there). Also, check to make sure the brake fluid has been flushed every few years per Porsche service recommendation.
Other 2001 things to check: rear window - it will crack if not properly maintained. Rear bumper extensions - if faded, Mothers Back to Black does a good job making them look new. 2001 tail pipes are stainless and polish up nicely. Porsche changed the cigarette lighter dimensions in 2002, so if you plug electronics in, plan on spending $15 or so to swap out the original for a new style that fits better. If no OBC or cruise control, they can be added later but it's easier if the cars comes with.
You should get the Bentley service manual for the basic things
Read out the OBD2 codes to make sure nothing is wrong and readiness is set for all the systems, i.e., nothing cleared to get rid of CEL right before you get the car.
Even at $14.5K, if your engine explodes and you have to spend $10K for a factory rebuilt one, you still have a fantastic car - nothing even close for twice the price! My '01 hasn't had the original engine blow up - go figure! I tell everyone the longer I have the car, the more I enjoy it
