Locating Factory Diesel Parts can be a bit challenging.  
Here are some links that might help:

http://www.bitwalla.com/cruisers/parts/

8/10/02
Wayne at Crusher's Rule may have some parts for sale.
Furthermore, Jeremy Love is parting out a HJ60.
And you might try the DTLC. 

If you are creative enough, you might also try some Australian and/or Japanese sources.  You can find more than your fair share of Australian links here at Mick's Links, many of which have been copied into my links page.