Is the Porsche 911 a good investment?

The thesis

The 997.2 Turbo S with the six-speed manual is a rare beast—Porsche built very few manuals by 2010, as buyers overwhelmingly chose PDK. The twin-turbo 3.8L flat-six produces 530 hp, and the manual transmission adds driver engagement often missing in later forced-induction 911s. Manual Turbo coupes average around £100,000, and the Turbo S manual commands a 10–15% premium. This is a last-chance opportunity to own a manual turbocharged 911 flagship before the 991 generation went PDK-only for Turbo models.