From its introduction in late 1964, the Porsche 911 has become an icon among thoroughbred sports cars. The classic models, built until the end of the 1989 model year, represent the purest of the type and are coveted by enthusiasts across the world. The early 911s have become collectors' items. Meanwhile, and thanks to far-sighted body shell protection, the later models can offer a reliable, everyday classic This new Ultimate Buyers' Guide is a one-stop reference for all the classic production 911s built from 1964 to 1989, describing the design differences, year by year changes (and there were many!), vehicle identification data, performance, colors and options. We suggest what to look for when choosing and buying a used example.