They are made in Australia (Melbourne, somewhere near Dandnong I think) but are no longer held in stock. So they are always made to order which means about a 4 week wait. But they SHOULD be able to do them in the offset and stud pattern you want.
Give them a call and have a chat about it all. They are in the Yellowpages. They insist you go through a distributor, but any tyre place will be able to get them in. Just tell them EXACTLY what you want. I've heard Performance are a bit slack and liable to stuff up orders.
And yes, I run them and they are heavy, but are very good for driving up gutters.
Should be about $200-220 per wheel if I remember right.
Hen
PS, the centrebore hole on their sprinter wheels doesn't match the sprinter hubs.