Brendon, there's a guy in O'Connor that makes 'unbreakable' billet shafts to any specs you want. Ironically he was out at Targa drumming up interest. I think the business is called Turn Around Machining or similar. If you can't find him, try Phil Purser at Final Drive, he works out of the same factory I think.

I need 2 inner R180 CV cups if you have any busted shafts I can scrounge?