I have just bought a new project bike in the form of a 1985 Import NS250R. Its in need of a fair amount of TLC which i have already got started on, but i have come to a brick wall when it comes to spares. Am i right in thinking that most of the spares are interchangeable between the 125 and 250 versions?

I am Searching for a new piston and piston rings, head gasket and spark plugs just to get started.