The Audi Quattro is a Rally Giant because it was the first to combine four-wheel-drive and a turbocharged engine - not the most sophisticated, but it was the first, and very successful. It was also the first to run with more than 300bhp. As it was re-homologated/transformed from Group 4 into Group B in 1983, it was also the first successful Group B car. The Quattro dominated rallying from the start of 1981 until late 1984 (when the Peugeot 205 T16...