the 3000 cc class (2142.8 cc with turbo or supercharger), 960 kg minimum weight (Audi Quattro, Lancia 037); and 2500 cc (1785 cc), 890 kg (Peugeot 205 T16, Lancia Delta S4). The original Renault 5 Turbo had a 1.4 L engine so it was in the 2000 cc class. Renault later increased the size of the engine somewhat for the Turbo Maxi, so as to be able to fit larger tyres (at the expense of somewhat higher weight). The Ferrari 288 GTO and the Porsche 959 were in the 4000 cc (2857 cc), 1100 kg class, which would have probably become the normal class for track racing if Group B had seen much use there. Classes in Group B: Rallying 1982-1983 The existing Groups 1-4 were still permitted in the World Rally Championship during the first year of the new groups. Although some freshly homologated Group B cars were entered from the first round in Monte Carlo, no car from the group podiumed at any of the season's 12 rallies. Although the Audi Quattro was still in essence a Group 4 car, it carried Hannu Mikkola to the driver's title in 1983. Lancia had designed a new car to Group B specifications, but the Lancia 037 still had rear wheel drive and was thus less stable than the Audi over different surfaces (generally the Lancia had the upper hand on tarmac, but the Audi remained superior on looser surfaces such as snow and gravel). Nevertheless, the 037 performed well enough for Lancia to capture the manufacturers title, which was generally considered more prestigious at the time, with a rally to spare. In fact, so low was Lancia's regard for the Drivers Championship, they did not enter a single car into the season finale RAC Rally, despite the fact that driver Walter Röhrl was still in the hunt for the title. The low homologation requirements quickly attracted manufacturers to Group B. Opel replaced their production-derived Ascona with the Group B Manta 400, and Toyota built a new car based on their Celica. Like the Lancia 037, both cars were rear wheel drive, and while proving successful in national rallying in various countries, they were less so at the World Championship level, although Toyota won the 1983 Ivory Coast Rally after hiring Swedish desert driving specialist, the late Björn Waldegård. 1984-1985 In 1984, Audi beat Lancia for both the manufacturers' title and