I heard back today from my American parts supplier so I have ordered a new set of Boge shock absorbers, new brake hoses, brake caliper overhaul kits for each wheel, and a new clutch master cylinder and a new brake master cylinder, I have to keep the monthly parts order below AUD$1000.00 to avoid import duty.
Thankfuly most small parts gaskets seals and hoses can be sauced locally and are reasonably priced.
When we have installed the brake parts and reassembled the motor we will have a better idea of what parts are required next but the restoration has started at last.