Is the Porsche 997.1 GT3 RS a good investment?

The thesis

The first 997 RS, with a 3.6L Mezger engine producing 415hp and iconic Orange or Green livery. Production was limited to ~1,168 units globally, of which only 410 went to the US. UK pricing has climbed to an average of £180–190k, which places most examples at or above the stated budget ceiling. Cars at the lower end (£145–160k) are typically higher mileage or less desirable colours.