Some of the wildest production car-based racers of all time were devised under the hallowed Group 5 regulations.

Although the framework was particularly liberal, Porsche still sought to exploit every loophole when it came to creating the 935 of the 1970s.

At its core, the model was born out of the 930-generation 911 Turbo.

However, the signature vertical headlights were ditched, and the rear fenders were elongated to help make the new model as aerodynamic as possible.

Fitted with a 3.2-liter air-cooled flat-six engine fed by two turbochargers to ultimately create a staggering 845 horsepower, later 935s could almost break 230 mph.

Such potency was devastatingly effective.

Variations of the Weissach wonder won the 24 Hours of Daytona six times on the spin, chalked the same tally in the 12 Hours of Sebring, and earned a hat-trick of victories on Porsche home soil in the 1,000-kilometer event at the Nürburgring.

What’s more, in 1979, the 935 became the first GT-based car in three de...