Motocarlo:
I'm not interested in the 2.7 liter where the vast majority of the IMS problems are reported to have occurred. I'm looking for a 3.4 liter 6 cyl. From everything I've read, and I think I've read a hundred pages of details, reports and sales pitches, the 3.4's from 2006 forward have proven to be pretty much bullet proof. The comparable price difference between the two engine configurations with close to the same mileage and same year of mfg. seems to be $3k to $4 on average.
All things being equal, and with the cost of an LNG replacement bearing done right at about $3.5k to $5k with a clutch replacement thrown in with a manual, it makes sense to just buy a 3.4. Of course, the extra HP doesn't hurt.
I've promised my wife an automatic so she can motor along peacefully by herself. She learned to operate a manual driving Deere tractors growing up on her family farm, but she's over it now.
I've found two with less than 50k on the clock, well cared for cars that meet the parameters. Both appear to be immaculate examples with extensive maintenance records. I'll still have a PPI done.
Planet 9, the Cayman and Boxster site has some good direction on what to look for. One thing was to have the water pump swapped out at about 50k miles.
What was your experience with yours like in terms of maintenance and parts?