GTA 5
Add To:
GTAV\mods\update\x64\dlcpacks\mpairraces\dlc.rpf\x64\models\cdimages\mpairraces_male.rpf\mp_m_freemode_01_mp_m_airraces_01

FIVEM
drag and drop to resources folder then add 'start valhalla' to server.cfg