former Ligier and Renault engineer Jean-Yves Charles, and it was fitted with a 3.3-litre Cosworth DFL tuned by Swiss engine-specialist Heini Mader. The previous year he had raced with Jean-Philippe Grand, an agent for Primagaz and they teamed up again with Primagaz sponsorship along with Michel Dubois as the third driver. The GRID team (Giuseppe Risi and Ian Dawson) had latterly run the Lola works program. This year they developed their own Group C car with a design by Geoff Aldridge, who had worked on the revolutionary ground-effects Lotus 79 with Colin Chapman. The S1 had a Kevlar and carbonfibre with a 3.3-litre Cosworth DFL. Emilio de Villota ran WEC races with David Hobbs. To run with de Villota at Le Mans, Dawson brought on board Alain de Cadenet and Desiré Wilson. De Cadenet had given up on his own racing projects and had a 3.9-litre DFL for his prospective C100 that he offered. But even with that the car could only just reach 290 kp/h (185 mph). François Duret had bought an old De Cadenet-Lola, and, with Ian Harrower's ADA Engineering, fashioned a new Group C-compliant bodyshell. But kitted out with an underpowered 3-litre Cosworth DFV, it could only reach 320 kp/h (180 mph). German Ernst Ungar had been building sportscars since 1973, and this year Ungar Racing Development built two cars for Jürgen Kannacher to run in the Interserie and DRM. The C81 was built around the BMW M1's 3.5-litre engine. Prepared by the Schnitzer Motorsport team, it put out 480 bhp that could get the car up to 305 kp/h (190 mph). His experience with building hill-climb specials meant it was quite light. Group 6 (2-litre) Although the large Group 6 cars had been superseded by Group C, the FIA allowed the 2-litre cars entry to help keep the fields up (and did not prevent new models from entering). They would not count points towards the Manufacturer's Championship, but could to the Driver's title. Ever the opportunists, Lancia produced a new, open-top car for the Group 6 class. The Lancia LC1 had a chassis built by Dallara, with skirts and ground effects (both banned in Group C). It was fitted with the same 1425cc turbo-engine that was in their Group 5 Beta Montecarlo, which was now tuned to put out 440 bhp. Without the weight limitations or fuel restrictions of Group C it could still reach 300