How to install:

1- Navigate to Mods> x64v.rpf> models> cdimages> streamedpeds_mp.rpf> (You can rename the files to whatever ped you want to replace)
2- Delete all of the old files and add the new files.

For ymt and yft's:
1- Navigate to Mods> x64v.rpf> models> cdimages> streamedpeds_mp.rpf and replace the files (You can rename the files to whatever ped you want to replace)

DONE!