ESR present the Next fun Series with Ford Mustang IMSA GTO CUP: The GTO class showcases some of the loudest, widest and most memorable racing machines on the motorsports scene during the 80’s and early 90’s. Brawly, boxy Mustangs, Audi Quattro’s on steroids and high tech Nissan ZX’s all fighting to dominate North American sportscar racing, much like the Group5 monsters did in Europe and Asia.Like the Group5 car class, these are brutal vintage cars but what a glorious sight…