Found this link from NyaaTorrents which includes almost ALL series during the showa period.
Comes with many extras like disc art, behind-the-scenes and interviews etc. All are raw. Although if you search around you may get subtitles somewhere. (Thanks to Hikari Senshi for Jack subs)
Sadly, Ultraman 80 is not included and I can't find him anywhere on the web, yet.
Click here to download torrent.