Matt,
Welcome to Mossie sailing, when you are looking for hardware just go to your local yacht shop, As for Blades and Boards Joey in Bendigo (0402456743) has been making them for the new boats, I also have a set of new 11" Boyer boards if you are interested. The most commonly used sail makers are Linsay Irwin's (03 95557328) from Melbourne, Asby Sails (03 54393799) and Goodall Yacht Sails (03 54436910) from Bendigo and John Cliffton(08 82949485) from Adelaide. They also make tramps. These guys send sails all over the country/world so getting them to you shouldn’t be a problem.
Peter