As the numberplate is on it in this one and not the other, I'd say this is a bit earlier...

The knock-on hubs hubs are visible, so it's still in the wire wheel era.

Behind him is the Morgan of Ken Ward, I'm not sure whose Elan, possibly John Maroulis or Len Goodwin, this places it between '66 and '68. Location is entering the Esses at Warwick Farm as the others are exiting Creek Corner.