I could use a casting that fits into the end of the rear cross beam.
I believe I have the older, smaller version of the rear cross beam (1997).
GARY
We need more Canadian action on here for parts exchange I think as for myself I have no spare parts to speak of just enough to keep it going although Marstrom Tornado in the late eighties used all of the same style beams as my 93 M6.0 so I am holding on .That makes it handy for you XL sailors.Found a second flaw in my Taipan rudder system . The tiller crossbar has on each end Nylon or Delron (white) end caps that are through bolted ,this slides over each of the rudder arms on pins .I went to twist the bar so that the tiller handle yoke was more upright and I snapped it off so I need to start a Australian thread for parts now. 
Gary the castings are also the same.......