Porsche 911 The Definitive History 1997 to 2004 Volume 5 is from an acclaimed series. All 911 models and their derivatives are covered from 1997 to 2004. This volume begins in late 1997 with the introduction of the 996 models-the first water-cooled 911s. The production cars for the U. S. , and European markets are looked at in year-by-year detail, so that all variants (including 911-based competition cars and limited editions) are described.