A heavily modified 1986 Audi 5000 CS Quattro sedan driven by three ... then dominating the Trans Am and then IMSA racing series.

and has gone to extreme lengths to transform a workaday Audi 90 into the IMSA GTO version of that car. Not wanting to go the stripe-and-bodykit route, this Audi's flares were painstakingly ...

Its carbonfibre bonnet is the first on a production Audi, with its unpainted sections referencing the IMSA-GTO racer. The front bumper is entirely new, featuring a deeper, lower central intake and ...