Found an interesting website.

Tadas

Not sure if this is repeated or not but I was browsing along looking for random missing bits to my shuttle and stumbled upon this site.

It might be of use for those looking for hard to find parts.

http://www.cmsnl.com/honda-civic-wagon-1989-wgn-4wd-1600-ka-kl_model17920/partslist/

Vladi

I always use lingshondaparts.com

But I like this site too!

Laserjock

http://www.hondaautomotiveparts.com/auto/jsp/mws/catdisplay.jsp?inputstate=4&catcgry1=CIVIC&catcgry2=1991&catcgry3=5DR+4WD+%281600%29&catcgry4=KA5MT&catcgry5=

for the North American market.

snowbrd

This is also a good site:
You can find anything with VIN code! I don't know if it's world wide..

http://partsale.eu/