here are the various places I found useful when doing my PE175N
http://members.optusnet.com.au/pe175n/suppliers_AU.htmlsome may be out of date, but 99% are good.
Are you after functional or mint? DC is a truly excellent repro, but had a wrong shade of yellow. This may have been changed in the last year or two, and if you don't want a museum piece, these will fit the bill! Headlight shroud - same.
There is a guy in the UK doing mint headlights shrouds, but in an enormous understatement, he is a
difficult chap to work with.
If fibreglass is OK, I can say that the Pri-Historic stuff is excellent. They do zillions of bikes, btw.
Sidecovers - ring Suzuki dealers, they ARE still available from factory and turn up all over the place, despite one curious cove trying to buy every set in Australia a year or so back.
factory C/N rear fender is hard to find, and crazy expensive when they turn up on eBay.
factory front is just the RM thing, and is easier to source.
ALSO: join the PE list here:
http://groups.yahoo.com/group/PEmotorcycles/and go read the FAQ.txt
OR
see the PE Repository here:
http://cid-407d7ef0965d3991.skydrive.live.com/browse.aspx/Pure%20EnduroLuke