Add on Installation:
1. Drag and drop folder "benzg55" into mods/update/x64/dlcpacks
2. Go to mods/update/update.rpf/common/data
3. Right click dlclist.xml and add a new line: dlcpacks:/benzg55/
4. Spawn with name "benzg55"

Replace Installation:
1. Drag and drop dubsta.yft and .ytd files into 
\mods\update\x64\dlcpacks\patchday3ng\dlc.rpf\x64\levels\gta5\vehicles.rpf\dubsta.yft


SOUND FIX

1. Drag and drop m113k folder into mods/update/x64/dlcpacks
2. Go to mods/update/update.rpf/common/data
3. Right click dlclist.xml and add a new line: dlcpacks:/m113k/

The audioNameHash in vehicles.meta has already been changed to "m113k", you just need to add the m113k dlc pack in if you dont have it already. 