As has been stated previously over and over again and hinted by Dodgy,a car can be sold by a dealer but not actually hit the road,more importantly all the go fast bits had to be homologated and imported cars did'nt have to sell the numbers(in spare parts)that the Aussie made cars did.
Yes there was lots of GX stuff available over the spare parts counter,but walking out with a complete car,now that was a differant issue all together.

Interesting you mention the 350 Monaro...my Dad missed out on that seat recall.I was only ever allowed to drive it on very special occasions...i now know why,a missile with no brakes,but the pose value was as good as it got!