Porsche continues to expand the current 911 range with the recent debut of the 992-generation 911 GT3 but there are some enthusiasts who prefer old air-cooled 911s.

Back in 2018, Singer set out to create the "most advanced air-cooled 911 in the world" with the debut of the Singer 911 Dynamics & Lightweighting Study (DLS) at the Goodwood Festival of Speed. Fast forward three years later, and the first customer example was completed back in March. Based on a 964-generation Porsche 911, the Singer 911 DLS has been extensively modified to make it lighter, faster, and more visually appealing than the original. Only 75 examples will be built in the UK, and one of them was recently spotted by our photographers racing around the Nurburgring.

The Singer 911 DLS at the Nurburgring appears to be the same Oak Green example based on a 1989 Porsche 911 964 that was revealed back in March. Although the first customer example has already been completed, Singer took it to the Nurburgring to test the engine and driving dynamics before it's delivered to its new owner to ensure it lives up to expectations. Whether or not the company will attempt a lap time around the Green Hell remains to be seen.

The Singer 911 DLS is the result of a collaboration with several renowned technical partners including Williams Advanced Engineering, Bosch, Michelin, Brembo, Hewland, and BBS Motorsports.

Thanks to its full carbon fiber, aerodynamically optimized body, the Singer 911 DLS tips the scales at just 2,182 pounds. Other modifications include Brembo carbon-ceramic brakes, bespoke suspension, and a titanium and Inconel exhaust system.

Power is provided by a 4.0-liter naturally aspirated flat-six engine generating 500 horsepower that revs all the way to 9,000 rpm, so it should sound superb. Hans Mezger, an engineer who developed Porsche's first flat-six unit, also served as a technical consultant for the project. These extensive modifications mean that each Singer 911 DLS costs $1.8 million.