Adrian,
Python Cars (Cobra manufacturer in Melbourne) had an entry in for the 24 hour but I believe they are not going due to a major sponsor pulling out at the last moment.
I am going up this year with another team and hope to put a team in next year if the event is running. The reason for not being there this year is that the race car is still under construction and will not be ready till early next year.
Best wishes,
Robert