Is the Porsche 911 GT3 a good investment?

The thesis

The 997.2 GT3 with 3.8L Metzger flat-six is the last manual GT3 before PDK-only 991.1, and the final evolution before turbocharging infected the entire 911 range (991.2 onwards, except GT models). RHD examples available. The 997 GT3 RS 4.0 now trades at £450K+; standard 997.2 GT3 manuals at £100-145K have significant catch-up potential as collectors recognize this as the crossover moment. Porsche Motorsport provenance, daily usability, strong global liquidity.