Found this on the OSCA site, It is 1987 when the North boys ventured South to play.
Northern team was Ralph Mossman Viva Chev, Willis Commodore Chev, John Coulton Marina Chev and Jim Short Porsche.
Think this right.
Front is Kennard Cortina, hidden in behind is Mossman Viva then Willis Commodore, Vigurs Commodore, Munty Capri, Fisher Capri, behind is Coulton Marina (black) Shorty in Porsche and Osborne in RX