yeah ebay seems to be your best bet, re parts and manuals.
however, in australia (for anyone in oz), there is this magnificent second hand/new motor book shop, which has literally thousands of new and second hand manuals/books. workshop manuals too, as well as clymer and haynes manuals...
They are called "Wheels Of Time". Located at 10 Clow Street, Dandenong. Victoria, 3175. Australia. (Telephone +61 3 9792 3944). I'm sure they do mail order too.
I had stumbled on this shop after searching for fast food one day, and found an original workshop manual for my 1984 model KDX200-B1. For AUS$25, it was mine. Highly recommended.