Installation
With openIV, to reach: X:\Program Files\Grand Theft Auto V\update\x64\dlcpacks
and drag and drop the "nee_firestiff" folder.
Then, go to: X:\Program Files\Grand Theft Auto V\update\update.rpf\common\data
Then click on the "Edit Mode" button on the left of the search bar, right click on "dlclist.xml" then click on edit and add on the last dlc <Item>dlcpacks:/nee_firestuff/</Item> then save

Credits
- 11john11 - interior console, antennas, stanier hubcaps, stanier wheels, lightbar
- Vx5 Voltage - lightbar 
- Nachtfliege - Improved stanier base model
- Skitty - interior console
- w/ - trunk equipment 