I found this really nice website where a lot of the JPN fan-translated games have SNES style box art.
Really helped me fill out some of the hard to find RPGs that I couldn't find elsewhere.
Platforms List - LaunchBox Games Database
The LaunchBox Games Database aims to provide perfect game images and metadata for all known gaming platforms. Content is best viewed in LaunchBox.
gamesdb.launchbox-app.com
Really helped me fill out some of the hard to find RPGs that I couldn't find elsewhere.