TL;DR: Install it like any add-on car mod. Drag into your dlcpacks folder, list in dlclist.xml

Extra details:

Drag the toysupmk4 folder into GTAV/mods/update/x64/dlcpacks
Edit the dlclist.xml in GTAV/mods/update/update.rpf/common/data
Add the following line - <Item>dlcpacks:/toysupmk4/</Item>

To use on any car, edit the vehicles.meta it is defined in, and replace this line:
<audioNameHash>TOYSUPMK4</audioNameHash>

Questions, comments? Contact me on Discord: https://discord.gg/pBtVf5m

IF YOU ALREADY HAVE THE VEHICLE USING THE FOLDERNAME "toysupmk4":

> In this archive, go to FiveM Package/carsounds

> Install the files in audioconfig into an "audio" folder in the car's dlc.rpf; x64/audio

> Install the files in sfx into a "dlc_name" folder in the car's dlc.rpf; x64/audio/sfx/dlc_toysupmk4

> Add the following strings into the content.xml of the car's dlc.rpf;

--dataFiles--
<Item>
      <filename>dlc_toysupmk4:/%PLATFORM%/audio/toysupmk4_game.dat</filename>
      <fileType>AUDIO_GAMEDATA</fileType>
      <overlay value="false" />
      <disabled value="true" />
      <persistent value="false" />
    </Item>
    <Item>
      <filename>dlc_toysupmk4:/%PLATFORM%/audio/toysupmk4_sounds.dat</filename>
      <fileType>AUDIO_SOUNDDATA</fileType>
      <overlay value="false" />
      <disabled value="true" />
      <persistent value="false" />
    </Item>
    <Item>
      <filename>dlc_toysupmk4:/%PLATFORM%/audio/sfx/dlc_toysupmk4</filename>
      <fileType>AUDIO_WAVEPACK</fileType>
      <overlay value="false" />
      <disabled value="true" />
      <persistent value="false" />
    </Item>

--filesToEnable--
<Item>dlc_toysupmk4:/%PLATFORM%/audio/toysupmk4_game.dat</Item>
        <Item>dlc_toysupmk4:/%PLATFORM%/audio/toysupmk4_sounds.dat</Item>
        <Item>dlc_toysupmk4:/%PLATFORM%/audio/sfx/dlc_toysupmk4</Item>

