Hi Ern, I'm on the other side of Oz to you, welcome to the site.
Parts can be a PITA to source S/H out here compared to the States and Europe, but most are still available new aftermarket and OEM. Surprisingly they are probably cheaper and more readily available than parts for lots of Jap bikes (know from experience).
I work part time for one supplier, Munich Motorcycles, and though it seems I'm drumming up business (I'm not really), they can post out most parts to anywhere in Oz, taking the pain out of trying to find a local supplier of new bits. Discount Motorcycle Wreckers in North Coburg Vic. is also a well known source of S/H Beemer parts.
Hope you have a great time with the LS, they are a very collectable machine.
Bill.................;-)