The Stratos is, of course, best known for its hat-trick of WRC titles from 1974 to 1976 in Group 4 rally form. But the hottest (no pun) Stratos was the lesser-known Group 5 endurance sports car, which in its final specification made 550bhp from the Ferrari-sourced 2.4-litre V6 'Dino' engine with the help of a KKK turbocharger running at up to 1.4 bar.
The Group 5 class of the 1976 World Championship for Makes was for 'silhouette' cars that required only the most tenuous of links to a production model, allowing for some truly barmy machines, including the two works Stratos Turbos.
The Stratos had a tendency to overheat, however, and one of the cars terminally cooked itself at the Österreichring in 1976. Happily, the other went on to win the Giro d'Italia road race the following year and survives to this day, making an appearance at the Goodwood Festival of Speed in 2005. It now lives at the Classic Remise vintage car centre in Berlin. Probably near the fire extinguishers.