Years active: 1976 to 1977
Layouts used:
1974 to 1983
Motorsport Database
Racingcircuits.info
Wikipedia
Key:
AC - Assetto Corsa
AMS - Automobilista
AMS 2 - Automobilista 2
GPL - Grand Prix Legends
rF1 - rFactor
rF2 - rFactor 2