You will see them fitted both ways either from the nose cone or from the edge of the guard.
They were "dealer" fitted. Holden never fitted them. They were supplied to the dealer within the car to be fitted (or not).

Reading the original fitting instruction sheet might give a definitive answer or it may not.
There are plenty around with either fitment, probably close to a 50/50 split from my library of original HQ Sandman's.