drop s550 folder in :

mods/updates/x64/dlcpacks 

then go in :

mods/updates/updates.rpf/common/data

find dlclist.xml , right click, edit and add this line : 

		<Item>dlcpacks:/s550/</Item>

for extra config in order to work with vehfuncs V install "s550" files in vehfuncsv folder in your
game directory 

https://www.gta5-mods.com/scripts/vehfuncs-v

save, and your done.

that all, thanks for downloading! 