1983 Porsche 956 Group C heads to auction

The Group C era produced some of the greatest racing spectacles in history, and some of the greatest cars. Possibly the greatest among them was the Porsche 956, an example of which is headed to auction at RM Sotheby’s sale on August 14 at 2021 Monterey Car Week in California. Powered by a 2.65-liter turbocharged …