ROM Hack Beyblade Metal Masters Undub (Voices)

[plasma]

I plan to make a sound hack for the new Beyblade game (as they got rid of the voices)
I want to put the JP voices back in...but i was wondering
Does anyone know where the voices are? its not sound_data.sdat
(BTW this is the US ver. of Metal Fight Beyblade Choujou Kessen Big Bang Bladers)