Post Godzilla is not as cool as pre G. Dick Johnstons Sierra was unbeleivably quick, and the odd M3 which made the races was good too.
The saving grace of ATCC is Bathurst and the drivers seem like good guys. In fact, all of the tracks are circuits, not ovals which are deadly dull.
Aside from that, V8 still have a great popularity in Aus for road cars still.
I agree that the cars are not too varied, and 9inch diffs are the only option-Holden or Ford, but a few mates are fortunate enough to have ex racing V8's in their road cars, so you could almost say they have an influence on road cars.
As Carol Shelby said "You can't make a silk purse from a sows ear, but you can make a sows ear go fast"
Oh, mhn3773, you can eat SH?T!, and vault has a U, as in U idiot!