Is the Porsche 718 Cayman GT4 RS a good investment?

The thesis

The GT4 RS is the ultimate 718 Cayman, using the 4.0-litre flat-six from the 991 GT3. Manual cars are rare as most were specced with PDK. Low-mileage RHD manual examples sit at the top of the stated budget (£145k–£180k). As a recent special edition from Porsche's GT department it has strong fundamentals, but new-car status means risk of early depreciation before collector appreciation begins. Best suited to a buyer willing to hold through the initial dip.