Few Questions on a car I'm looking at

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Thanks for the replies so far. I found out that they did do the 30k service so I'm set there. Regarding the CPO, to do it would increase the cost and give me a 2yr/100k warranty. For a little more money I can get a platinum plan extended warranty for 4yr/60k (I'd be surprised if I hit 60k in 4 years) that covers everything but the expected tires, hoses, belts, etc. Thoughts?

I read what a PPI was somewhere else in the forum. Can someone refresh my memory and give some info on it? I did a search on PPI and got no hits.

I took a brand new s2k for a drive this morning and the another drive of the Boxster this afternoon. While they both have their positives I'm still leaning toward a Boxster.

Thanks again.