Moto Guzzi turned 100 this year, and celebrated with a slew of special edition models. But the crew at Guzzi Motobox in Catalonia had something grander in mind. To pay tribute to the storied Italian centenarian, they set out to build their ultimate Moto Guzzi cafe racer. The idea of creating a 100th anniversary Moto Guzzi came about rather fortuitously.…