Stages of the evolution of the Porsche 911 Turbo for all generations.
1 - 930 (production period 1975-1978 )
2 - 930 (production period 1978-1989)
3 - 964 (production period 1990-1994)
4 - 993 (production period 1995-1997)
5 - 996 (production period 2001 - 2005)
6 - 997 (production period 2006-2012 )
