Install instructions in download file.
Install path:
Fivem:
1. Put “mp_m_freemode_01_mp_m_heist3^” in front of the file name. (without quotes)
2. copy those files into your eup-stream folder.
SP:
1. Navigate to mods\update\x64\dlcpacks\mpheist3\dlc.rpf\x64\models\cdimages\mpheist3_male.rpf\mp_m_freemode_01_mp_m_heist3 and replace the original files.
Credits:
Mrazik