I have been told the three "reserves" are the following:
A8-142, first production AUP.
A8-148, last RAAF F-111C.
A8-113, ex-USAF F-111A 67-0113, flew the last F-111 combat mission in SE Asia, might go to US but the USAFM at WPAFB already have an F-111.
I believe the Ipswich Council wanted one, but whether they are prepared to pay the $$ is another thing. Anyway, apart from explosive items, asbestos or other nasties, the TF30 engines would probably be removed.