G'day Nashy,
Do your self a favour and go out to Warwick and see Mal Wood. He is
THE man for all things gearbox and diff. He is also a club sponsor and will look after you. His contact details are as follows:
Mal Wood Automotive
42 Lyons St
Warwick Qld
(07) 4661 3548
You can also have a look at his site
www.malwoodauto.com.au
Cheers,
Ken