Despite looking outwardly similar to the preceding models, Porsche thoroughly updated their 356 line in 1956 and called their new model the 356A. At the core, this included a larger 1600 cc engine, but also a curved-glass windshield and a thoroughly revised suspension. At the 1955 Frankfurt Motor Show in September of 1955, Porsche released the 356A/1600 to the world with cabriolet, coupe and speedster bodies from Reutter. The 356A/1600 was a great performer, good for a sprint to 60 mph in 13.5 seconds and hit a top speed of 109 mph.
A handful of push-rod 356As were delivered from the factory with a lightweight package that was usually reserved for the Carrera race cars. Called GTs, these got the stripped out interior, aluminum doors, a large fuel tank and Porsche ATE disc brakes. As few as four Speedsters came equipped this way. Since the four-cam was only a marginal improvement in power, the regular 1600 Super was more than enough for the small car.