That link pretty much sums it up. Two (2 [iI]) cars the Mach 1 (one {I] ) and the Mustang II (2 [Two]) just like model cars, slight changes through the years, headlights, wheels, tires and what have you. Do we really want to get going on the Cougar II http://www.carstyling.ru/en/car/1965_ford_xp_bordinat_cobra/(2[Two]) ?