To get someone else to make them in Canberra I would be speaking to M&A Engineering in Mitchel or Baxter Engineering in Fyshwick, either of them will be able to do it. Have a chat to them and say what you want and see what ideas they have and prices they quote.
The guys at Canberra Brake Sleeving are having a look at it on Monday to see what they can do. Ive already figured it out so it will be just up to them to machine the mounts and spacing stuff.