 add
		<Item>dlcpacks:/eastmurrietafavela/</Item>
		<Item>dlcpacks:/eastcpx/</Item>
                <Item>dlcpacks:/mdetail/</Item>
		<Item>dlcpacks:/eastmurrietamorro/</Item>
in GTAV/mods/update/update.rpf/common/data/dlclist.xml

drag and drop props in
Grand Theft Auto V\mods\update\x64\dlcpacks\mpstunt\dlc.rpf\x64\levels\gta5\props\mp_stunt_tubes.rpf\ mp_stunt_track.rpf 
and mp_stunt_course.rpf which are both located in the props folder