The first two races were open to Group E Series Production Touring Cars but with the demise of that category at the end of 1972 the event switched to Group C Touring Car regulations.
With the demise of the Group E category at the end of 1972 the event switched to Group C Touring Car regulations. The first two races were open to Group E Series Production Touring Cars.
The first two races were open to Group E Series Production Touring Cars. With the demise of the Group E category at the end of 1972 the event switched to Group C Touring Car regulations.
The first two races were open to Group E Series Production Touring Cars. With the demise of the Group E category at the end of 1972 the event switched to Group C Touring Car regulations.