The Authenticity Restoration Guide. A detailed documentation of an original 1958 Porsche 356A. Photos and Captions of the Exterior, Interior, Engine, Front Truck and Undercarriage. Historical information provided by Chuck Stoddard and Marco Marinello: The USA Sports Car Evolution of the 1950's and 1960's. Porsche KG in Stuttgart-Zuffenhausen during 1958. The Porsche 356A in the USA in 1959. The 10 Commandments for buying a 356A.