Any aust. car parts place that deals with this wholesaler ->
http://www.afi-australia.com.au/ ... or similiar wholesaler can sell you a direct replacement pump.
It may not have the correct sock filter tho.
Remove the original pump from the overpriced sender unit/fuel pump assy and take it in for a match. I ordered two TJ ones over the phone from out in the boonies from AFI and got the right ones .... The pump itself is just a nippondenso or mitsubushi product ... nothing special about it.
O-rings and the large fuel tank seal probably should be on the replacement list too as they would have some age about them.
Go gentle with the plastic locking ring on the tank as they get brittle and break easy.