internal factory designation, "Type 1", gave rise to its nickname "T1" among enthusiasts. In the US, 1,200 early 356s had been badged as the "Continental" and then a further 156 from autumn 1955 to January 1956 as an even rarer T1 "European" variant after which it reverted to its numerical 356 designation. In early 1957 a second revision of the 356 A was produced, known as Type 2 (or T2). Production of the Speedster peaked at 1,171 cars in 1957 and then started to decline. The four-cam "Carrera" engine, initially available only in the spyder race cars, became an available option starting with the 356 A. Within the last 25 years, replicas of the 356 A have become very popular. Most typical engine was a 4-cylinder boxer air-cooled naturally aspirated pushrod OHV 2 valves per cylinder valvetrain, with dual downdraft Zenith carburetors, producing at 4,500 rpm and a maximum torque of at 2,800 rpm. 356 B In late 1959 significant styling and technical refinements gave rise to the 356 B (a T5 body type). The mid-1962 356 B model was changed to the T6 body type (twin grilles on the engine compartment cover, an external fuel filler in the right front wing/fender and a larger rear window in the coupé). Porsche did not draw attention to these (quite visible) changes, initially keeping the same model designation. However, when the T6 got disc brakes, with no other visible alterations, they called it the model C, or the SC when it had the optional, more powerful engine. A unique "Karmann hardtop" or "notchback" 356 B model was produced in 1961 and 1962. The 1961 production run (T5) was essentially a cabriolet body with the optional steel cabriolet hardtop welded in place. The 1962 line (T6 production) was a very different design in that the new T6 notchback coupé body did not start life as a cabriolet, but with its own production design. In essence, it had the cabriolet rear end design, the T6 coupé windshield frame and a unique hard top. Both years of these models have taken the name "Karmann notchback". 356 C The last revision of the 356 was the 356 C introduced for the 1964 model year. It featured disc brakes all around, as well as an option for the most powerful pushrod engine Porsche had ever produced, the "SC". Production of the 356 peaked at 14,151 cars in