Hi guys
I just saw on a brazilian group on Facebook that a translation for the SNES game was just released. This game seems really interesting, with the different takes on the storyline said in the page here, so I thought someone here would like to try it too.
Here's the translation http://agtp.romhack.net/project.php?id=jojo
You also need need the rom "JoJo no Kimyou na Bouken" for SNES one SNES emulator and the program Lunar IPS
using Lunar IPS you patch the rom with the translation and then just run it on the emulator. really simple.