Saab Turbo Mobil Challenge
The Saab Turbo Mobil Challenge was a one-make race series, run by the British Automobile Racing Club (BARC) in the UK in 1987 and 1988. The cars permitted to compete were Saab 900 turbo cars in 10- and 12-lap races.
Source: Wikipedia — Saab Turbo Mobil Challenge (CC BY-SA 4.0)