Hi Kat,
My wife was born in Narrogin and lived 3 years in Bunbury. I will enquire to see if I can find anything. When did Owen move to Bunbury? What sports did he play? The RAAF connection could be very interesting, but I don't have much contact in that area.
As Mark has said previously, it would be helpful if you add some information to the Wikitree profile [[Gibson-24418|Owen James Gibson (1960-2010)]]. It gives some basis to work from and add to.
Regards, Steve