This car is based on the Prost JS45. There are four versions of the livery; one with tobacco and three with no tobacco. Choose one of them which suits your best.
Extract this skin into: (Assetto Corsa game directory)/content/cars/fc2_2014_season/skins
#14 Olivier Panis
#15 Shinji Nakano
Prost Gauloises Blondes 1997 1.3
#14 Olivier Panis & #15 Shinji Nakano + non-tobacco skins