[Noah930]

This is the turbo forum. Granted on this forum we're Porsche 911 owners from the same years, but there's lot more traffic on the 911 Technical Forum. You'll get a lot more opinions posting over there.

Regarding the mileage issues: I recently bought a car with similar issues. Car had been driven a lot and regularly for the first 20 years of its life, and then sat with sporadic use for the next decade. But I knew the guy selling the car (family friend) and knew that he had knee problems that kept him from driving the car (his reason for selling), so the cadence of mileage wasn't suspicious in my car's situation. In fact, it fit his story. There was one issue where the annual smog mileage also jumped back, but in retrospect I think it was an example of a typo done by the smog guy. The rest of the service records (fortunately I had those) had mileages that stacked up as expected. So the discrepancy didn't worry me. Irritated me, for the same reason you've listed. But it wasn't an example of odometer fraud and it was only off by maybe a few hundred miles, so I didn't sweat it.

My car also had no options sticker under the frunk hood or in the owner's manual. Never figured out why. But the maintenance manual was at least stamped for the first owner, so again I didn't fear any attempts at misdirection. Some owners are fastidious, and others not so much. I think you'll have to see if the car's condition looks appropriate for the stated mileage as a guage. I also think a PPI can pick up things (like bodywork/crash damage) that your not-professionally-trained-eye might miss.

As long as it passes smog now, I wouldn't be as worried if it didn't pass smog for a bit a year ago, as that problem has been fixed (as long as it's a reputable smog shop, and not a place that'll pass a car with a few hundred dollar bills and a wink of an eye).

Good luck on your search.