If that's the option, then probably Mullins' A40. That pic in post #2 is a ripper, with Red Dawson's old Mustang with the nose high in the air : he was certainly something of a folk hero in the older car, and it looks like he and Fahey certainly got stuck into it at that meeting.
The other thing I hadn't immediately noticed in those beautifully-coloured pics from the esses at Pukekohe : what about the massive crowd on the infield at the hairpin ? Amazing.