For classic conti cars .... i'd prefer anything else than a Cosworth 190E ... The Cosworth 190E was originally designed and built to compete in Rally, but when it was done, Audi released the Audi Ur Quattro which effectively stunned the world of Rally and racing by integrating 4WD and racing, winning every single race for 2 consecutive years. Merc kept the 190E cosworth and put it to DTM, which by then BMW launched the M3, and killed the 190E as well. lol ~ anyway ... here's some of the classics from that era.
Volkswagen Corrado
Audi Ur Quattro
BMW M3
Audi S2
General Motors Delorien (Heritage not from racing, rather from movie)