Read the thread to find out how to download, do not pm me.
You should already own a copy of these films on official home media.
Do 35mm prints exist for the Return of the King Extended Edition?
No, which is a real shame as this means the EE LOTR trilogy in 35mm will forever remain incomplete.
Theatricals are superior, anyway. Not just in terms of the movies themselves, but also the prints. I have seen both the theatrical and extended versions in the cinema, and the extended has the same disgusting colour grading as all home releases.