ITALERI Fiat 131 Arbarth Rally OL10 FiatThe Fiat 131 Abarth evolved from the initial two door sedan model. The Abarth development involved many interventions such as the adoption of a lighter chassis, larger wheel mudguards, air intakes on the bonnet and on the sides to optimize the mechanical cooling system. The Fiat 131 Abarth used an in line front longitudinal 4 cylinder engine with a light alloy head and 4 valves per cylinder. Initial manufacturing began in 1976 leading to participation