356B 1959-63

Towards the end of 1959, significant design and technical enhancements led to the introduction of the 356 B (designated as a T5 body type). By mid-1962, the 356 B model transitioned to the T6 body type, featuring 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.

Initially, Porsche did not overtly highlight these visible alterations, maintaining the same model designation. However, when the T6 received disc brakes, albeit with no other conspicuous changes, it was designated as the model C, or the SC when equipped with the optional, more powerful engine.

During 1961 and 1962, a distinctive "Karmann hardtop" or "notchback" 356 B model emerged. The 1961 iteration (T5) essentially integrated a cabriolet body with the optional steel cabriolet hardtop permanently affixed. In contrast, the 1962 version (T6 production) featured a distinct design, starting with its own production design rather than a cabriolet base. This model boasted the cabriolet rear end design, the T6 coupé windshield frame, and a unique hardtop. Both iterations from these years are commonly referred to as the "Karmann notchback."