there is a total of 8 voice scripts in here for savitar. i have it installed into the flash pack folder instead of the actual voiceplayer mod.
install: Grand Theft Auto V\scripts\Barak101\Savitar
if u want it in the voiceplayer just find the name of the model for savitar which is savitar i think most obviously. make a folder in Grand Theft Auto V\scripts\Voice Player and name it the model and just drop the voice lines in there. there shouldnt be any problems.