Maybe the guys at TWM didn't remember that in Oz you have right hand side cars and that the shifters are have a different design according to the possition of the wheel, left hand or right hand drive.
Left hand shifters are tilted towards the left where stearing is and also closer to your right hand witch is your shifting hand, so I guess you could have a problem there... inserting a left hand drive desifned shifter in a right hand side car.
I suppose you'd have to ask somo other Aussies, Kiwis or people from the UK or Japan that post here for their experience on this.