With the Porsche Cayman GT4 no longer produced, the time is ripe for an update of the first Cayman to undergo the GT department’s makeover. Word is that the new model will skip the flat-four turbo engines used by the latest 718 Cayman models.

The outgoing Cayman GT4 started life with a naturally-aspirated 3.8 litre flat-six derived from the 991 Carrera S, producing 385 hp and 420 Nm of torque. Porsche GT department chief Andreas Preuninger has earlier stated that the Cayman GT4 will remain naturally-aspirated, which could mean the use of the latest 911 GT3’s reworked 4.0 litre powerplant, albeit one detuned from the 9,000 rpm, 500 hp and 460 Nm of torque in the rear-engined car.

The Cayman GT4 should also retain its six-speed manual gearbox, paired to a limited-slip differential as par for the GT model course. A PDK option could also be on the cards for the track-focused machine.

The upcoming Cayman GT4 can be expected to adopt similar underpinnings, namely a front end (steering, suspension uprights) adopted from the contemporary 911 GT3 with adjustable parameters, while the rear suspension should also follow a similar recipe of bespoke components. The outgoing GT4 also had three-way adjustable anti-roll bars front and rear, and the bodyshell was modified from the standard series Cayman’s.

Here, the GT4 mule appears to wear the same clothes as before, seemingly with its engineers’ focus on chassis development as the foam wheelarch extensions suggest. This could mean a wider wheel-and-tyre combination. On the chassis front, it remains to be seen if this upcoming Cayman GT4 will adopt rear-wheel steering as on its 911 GT3 and GT3 RS brethren.