Porsche Spyders 1956-1964: Type 550A, RSK and 718

The great success that Porsche enjoyed with its first 550 Spyders spurred its small but effective racing cadre to a more ambitious design with its 1956 Type 550A. It's stiffer space frame was inside the 550A that Umberto Maglioli drove single-handed to win the 1956 Targa Florio — Porsches greatest victory yet. Experiments in 56 with an even smaller racer, the Type 645, ended with a disastrous crash. Not for nothing was it nicknamed "Mickey Mouse". In 1957 Porsche created the immortal RSK, a …