Yeah, this one is pretty much impossible.
As an alternative, I made a NODUB version, where you just delete all the sound files. Not only do you not have to listen to the horrible english dubbing, the text boxes load noticeably faster.
Though you should replace the sound effects files with the japanese so that you'll get the japanese voice at the intro, and japanese voices for when you use powered up shots. Replace the movies as well, for japanese voice (but no subtitles, from what I remember.)
Who knew fixing Crapcom US's mistakes could be fun and educating!