Should you be using https://www.gta5-mods.com/misc/modding-dlc-pack-v, 

drop the peds.meta into

mods\update\x64\dlcpacks\[YOUR DLCPACK FOLDER NAME]\dlc.rpf\common\data

the component files here

mods\update\x64\dlcpacks\[YOUR DLCPACK FOLDER NAME]\dlc.rpf\x64\models\cdimages\componentpeds.rpf\

and the prop models here

mods\update\x64\dlcpacks\[YOUR DLCPACK FOLDER NAME]\dlc.rpf\x64\models\cdimages\componentpeds_p.rpf\

If you AREN'T using the Modding DLC, you'll have to use the Addon Ped Script.

Or somethin else if you know how.