I just called Austral bricks head office for you and the Hawthorne has been discontinued. Its replaced with the Hawksburn or the Burleigh????
Better you know now. Also the may have heaps of stock to clear so if you build soon you may be lucky.
Well the hawksburn is the skinny version. Hmm.. this is gonna *** me off.
When are you building?
They have stopped making them but they still have couple of months supply. If you build with in the next 3 months I think you may be ok!