Not necessarily a Group C car or a Group 5 or 6 car. But, a car the embodies the spirit of the sports car racing of the mid to late 1970s and early 1980s. This is the Porsche 935 DP based on a 964 RSR, the 964 variant of the Porsche 911, in RSR, racing spec.
From Belgian-Motorsport on YouTube.
Engine: Boxer-6 NA / 3800 cc / 231.8 cu in
Power: 375 hp / 279.3 kw Weight: 1060 kg / 2336.8 lbs
Drivers: Dirk Towesten (GER) / Mike Towesten (GER)
Race series: PCHC
Date: 2017 Zolder, 2018 Hockenheimring
Filmed with Canon Legria HF G40 + DM-100 microphone