Under Bertone designer Marcello Gandini, Fiat found its way to the wedge-shape car market that had taken early 1970s sports car designs by storm. Triumph had the TR-7, Lotus had the Esprit, and Maserati, Lamborghini, and Ferrari topped the class with their own wedges. The X1/9 represented an affordable sports car that delivered exciting performance anywhere but the drag strip. X1 was the prototype code for passenger cars, with the X1/9 being the ninth car developed. Mounted just behind the passenger compartment are the engine and transmission from the Fiat 128. That engine produced a whopping 67 horsepower in European form and a few less in America once it was hampered by emissions-reducing equipment. With the only real weight the X1/9 carried mounted mid-ship and the fuel tank and spare tucked in ahead of it, the X1/9 is best experienced on backroads and the twistier, the better. Thankfully, in the world of Forza you won’t have to remove the litany of access panels to perform simple maintenance and, should you want to give the X/19 a shot in the arm, an upgrade is but a click away.