Victorian zone office HZ's had to come from Pagewood, Acacia Ridge or Elizabeth as they stopped HZ production at the end of 1977 (and only did HZ vans and tonners anyway). It could be as stated, or it could be simply a matter of a dealer looked up plant stock or other dealer stock and grabbed the car for a customer. I didn't realise Murrumbeena was in Victoria until I looked it up!