1. Open OpenVI and navigate to dlclist.xml

/update/update.rpf/common/data 

2. Open it and paste this line at the end:

<Item>dlcpacks:\500gtr\</Item>

3. Navigate to update/x64/dlcpacks and copy 500gtr folder inside

Spawn by name:
 
"500gtrlam"








Use modified gameconfig.xml if You crash while loading story mode! 
Gameconfig by Game68240 
https://www.gta5-mods.com/misc/gameconfig-for-patch-1-0-757-2-update-at-each-r-update 
