get both cars ready, so only one was shipped to France to be run by Mario Andretti (who had last raced there in 1967) and his 19-year-old son Michael. March Engineering was already making an impact in the American single-seater CART series. It entered Group C picking up the BMW M1C design targeted for the IMSA competition. That car was substantially reworked by Adrian Newey to be able to accommodate any engine into its monocoque chasses. The first choice was a Chevrolet 'small-block' 5.8-litre V8, which put out 550 bhp. The first chassis was bought by Bob Garretson as GTP-spec, and had performed well in America. Bobby Rahal and Jim Trueman had finished second at Sebring and were joined by Skeeter McKitterick. Two more chassis were sold to American teams while the fourth chassis was entered by the works team for Le Mans, to be driver by Eje Elgh, Patrick Nève and Jeff Wood. The new Group C model by Dome was the RL82. Built by March, it had the 3.3-litre DFL engine and new brakes, but no longer had the distinct wedge-shape of the previous models. This year, regular team driver Chris Craft had former March F1 driver Eliseo Salazar. Nimrod Racing Automobiles had been formed in 1981 by Englishman Robin Hamilton and Aston Martin chairman Victor Gauntlett to build a Group C competitor based on an Aston Martin engine. Hamilton had previously run his own modified Aston Martin V8 Vantage at Le Mans, with poor results. They took the T385 design from Eric Broadley at Lola, and built it on an aluminium hull. It was fitted with a fuel-injected Aston Martin 5.3-litre V8. Tuned by Aston's in-house team, Tickford Engineering, it put out 570 bhp and could get up to 320 kp/h (200 mph). But at 1050 kg, it was easily the heaviest of the Group C cars. Two chassis were built and one sold to Viscount Downe (an Aston Martin shareholder). The works car had Geoff Lees, Tiff Needell and Bob Evans, while the Viscount's car had Ray Mallock, Mike Salmon and Simon Phillips. The 'privateer' car was sponsored by Aston Martin saviour Victor Gauntlett's company Pace Petroleum. Inspired by the achievements of Jean Rondeau, fellow Le Mans resident Yves Courage decided to build his own Group C car. The Cougar C01 had an aluminium monocoque from the same company supplying Rondeau. The chassis was designed by