The 1994-98 911 models, known universally by their Porsche internal type number - 993 - have achieved an almost cult status among enthusiasts of the marque. The 993 is the last of the air-cooled 911s and in the eyes of many represented a peak in the model's engineering development and build quality. With a full range of performance versions that included the iconic RS and Turbo, the 993 is the 911 no self-respecting sports car fan can afford to miss. This Ultimate Buyers' Guide introduces all the production 993 model types, describing the technical specifications, identification data, performance, colors and options. Using color photography of the cars and many actual problem areas, we discuss what to look for when choosing and buying a used example.