One point Pinky, I think you will find in 'Series Production' racing ( before the Group C regs were adopted)..the cars were basically straight off the showroom floor, and they did not even have a roll cage fitted.
Struth!!
Got a vague idea that you are quite correct,
SOPS. 
Which, IMHO strengthens my argument that the current version of the Bathurst Car race is not only boring but completely, totally and utterly irrelevant to
any cars available in
any car dealer's showroom.
and we had rear windows being kicked out and boot lids being attacked with axes.
I remember the two above quoted examples only too well!