How it all started… The Lancia Delta S4 is one of the rare rally cars of the so-called Group B – and was even one of its most sophisticated examples. Although the era of Group B was extremely short, from 1982 to 1986, these four years were enough to anchor it forever in the annals of rallying. The reason is simple: the federations relaxed the regulations, suddenly almost everything was technically possible – and instead of 400 production cars, only 200 race cars were needed to be admitted to the WRC. For an evolution stage, i.e. an improvement of the car, you even needed only 20 production kits. CM Model…