I think this is the 1972 Benson & Hedges 500 Pukekohe. Looks like an Avenger coming up to the left hander (dark bonnet) probably would be a TC. Was a 6 hour production car race for NZ assembled cars
Apart from the darker car the six leading cars are all Fiat 125T , the seventh Fiat 125T is behind to the right of the Avenger, looks like a standard Fiat 125 is to the left of the Avenger.
The Fiat 125T was NZ made for this 1972 race, all were yellow with black grill and the rear panel between the lights, all had Ward mags, black interior with high back seats,lowered suspension, a large fuel tank filled half the boot and the 1608cc engines were either fitted with twin Webber or Dellorto producing 125hp
About 83 were built and only about 30 remain, I was fortunate to own two of them, only selling both of them a few months back
A 265 automatic Valiant Charger won that day