[onewhippedpuppy]

Timing chain tensioners and some forms of IMS failure can both be seen through a cam deviation check I believe, which is done via computer. RMS, coolant tank, water pump is basically a visual check for leaks. Seat belt buckle will trigger the SRS light. Bore scoring or d-chunk is typically an infant mortality issue, considering the mileage of the car you are considering it should be a moot concern, but would show up during a compression or leakdown test. I've never heard of a 996 with a head gasket issue, and the 1999 does have a head gasket. Are you guys thinking of the early 964s that didn't have a head gasket? There are a few instances of 996 heads cracking, but that's often associated with overheating.

Any good indy Porsche shop should be able to give you a good PPI. The 9X6 cars are common and the PPI checks are pretty routine, even a compression or leakdown test isn't rocket science.

Btw, glad you are moving forward with that car. It looked very nice and was fairly priced.