They should be able to mail them to you. I know here in the US distributors can mail product in their region but not out of it. And since there is only one distributor down under......
They have several manifold designs depending on how much you want to spend. You can download their .pdf catalog from www.clippard.com,
it's only 64 megs or so
Here are some model numbers for you
But the one that I think would work best would be the 15481-4, to -12, the -# is how many needle valves it will hold. Just use their plugs to fill the holes you don't use.