YOU RICH SON OF-calm down, CALM DOWN, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10.
Ok, I think there might be a fix...
Mario & Luigi RPG 3 (J) runs on DSTT, no? why not using the unpacker to take the Script and voices from the USA release and Replace 'em on the japanese version?