nigel hunt wrote:radiator although i think a member has me sorted
2 piston kits

Tyga

front barrel and head or maybe a matching pair

Yahoo auctions japan
auctions.yahoo.co.jp

set plugs which are best ?
gearbox oil which is best ?

NGK Br9ecm
Motul semi-synthetic is what I use, I have a wet clutch mc18

ignition barrel as 1 on bike is liable to turn off over a bump any other bikes fit nc30 etc

Check your local bike store for an aftermarket one, failing that
auctions.yahoo.co.jp

air filter

gavin at jap4 may have some

braided brake lines wheres best to buy these ?

HEL - check the supporting vendors

brake pads whats best type ?

I like EBC - wemoto stocks all this stuff

wheel bearings
headstock bearings
fork seals
fork dust seals

Tyga

chain and sprockets standard gearing or change it just for roading riding ?

Wemoto

headlight
clear screen
pillion seat or cowl infill

auctions.yahoo.co.jp

Hope this helps. The search fuction works well, as does google. Message Moriwaki Man in regards to parts from japan.
Have fun!