I assume Beechey left the Nova in NZ between the late 1968 event, and the Xmas event. He had been racing his new Camaro in Aus and was about to debut the even newer HK Monaro, so the Nova wasn't required. He was likely hoping to sell it to a Kiwi.

Dawson raced his ex-Frank Bryan Shelby at the 1968 ATCC race at Warwick Farm, which was on September 8, so must have bought this car well before Oct/Nov 1968, because it was already painted blue for this event. Dale should know?