If you’re a fan of hardcore Porsches – and let’s face it, who isn’t? – you must be in seventh heaven right now.

In the last 18 months there have been a veritable onslaught of lighter, stiffer, more powerful and focussed rear-engined sports cars emerging from Stuttgart, starting with the 911 R and followed in quick succession by a new GT3, GT3 Touring, Carrera T, GT2 RS and now this, the 991.2 GT3 RS.

On the surface it appears little has changed from the previous GT3 RS, but dig deeper and this model has a number of subtle improvements that will make it faster, sharper and, hopefully, better to drive than ever. First on the list is a new engine: displacement remains 3996cc but the new unit is based on that in the 911 GT3 Cup car.

If Porsche follows tradition, that figure will be highly conservative, but it’s enough to lop 0.1sec from the 0-100km/h claim (now 3.2sec) and lift the top speed by 2km/h to 312km/h, though this figure is lower than the regular GT3 due to the extra downforce of the RS.

In standard guise the chassis carries over virtually unchanged, though that’s not necessarily a bad thing in this instance. There’s the wider Turbo bodyshell, required to clear the massive 21 x 12.5-inch wheels wearing 325/30 tyres, which also allows the use of the side intakes to better feed that air-hungry engine. The front axle wears 20 x 9.5-inch rims and 265/35 tyres, which once again are Michelin Pilot Sport Cup 2s.

What is extra is the Weissach Package, which shaves off 30kg using ideas developed for the GT2 RS, including magnesium wheels, carbon fibre for the roof, anti-roll bars, steering wheel trim and gearshift paddles and a titanium roll cage.

If you have $416,500 (plus on-roads and options) burning a hole in your pocket, Porsche Australia is taking orders now with first deliveries expected in the final quarter of 2018.