It's VH-EBU - Nalanji Dreaming
Photos: Boeing 747-338 Aircraft Pictures | Airliners.net
Been in Avalon since 2005 - and in about the condition you photographed it since about 2007. God knows what the plan and story was - I believe it went down there for maintainance in 2005 - pulled it apart with the intention of returning to service - GFC hit - some of the other 300s were also bought down and parked, things picked up the other 300s were put back into service and they didn't end up spending the money to get EBU going again and it's sat there ever since.
Wunala the other was initially on VH-OJB - then it got taken off and put onto the new 400ER - VH-OEJ