Do this in OPENIV

Grand Theft Auto V\update\x64\dlcpacks\mpstunt\dlc.rpf\x64\models\cdimages\mpstunt_male_p.rpf\mp_m_freemode_01_p_mp_m_stunt_01

Drag and drop into this folder. (Make sure to toggles it to a mods folder so it doesnt overright the orginal files).