[racer]

Some consider oil shavings found in an oil filter to be signs of pending IMS danger. That said, I am not sure of any statistics of IMS failure. Porsche has built thousands of these M96 motors and no one can know for sure how many actually have failed. If it makes you feel better, for $xxxx, you can have an IMS upgrade performed.

x2 on getting an idea of cost to fix mentioned items by a shop. Use that as your bargaining tool. That said, buyer doesn't have to agree to a price adjustment, just as you don't have to buy the car either, despite your being out the money expense of the PPI.