Install:
Go to: Grand Theft Auto V\mods\update\x64\dlcpacks
Drag and drop the bravolguard folder.
Go to:Grand Theft Auto V\mods\update\update.rpf\common\data
Open dlclist.xml
Add the following line between <Paths> </Paths>
    <Item>dlcpacks:/bravolguard/</Item>

Optional for better optimization on replace (recommended of you know what you are doing): 
For the liveries to work, add FLAD_HAS_LIVERY on update.rpf vehicles.meta flag entries for the LGUARD entry (replace only) (at Grand Theft Auto V\mods\update\update.rpf\common\data\levels\gta5
Add alamo handling to update.rpf's and then add ALAMO handling to the LGUARD (at Grand Theft Auto V\mods\update\update.rpf\common\data) 
Not exactly needed to so these changes but the car will have 3 more liveries and better handling if you do so.

Spawn name: lguard (replace) lguardalamo (addon)

Siren ID: 250

Credits: 
IlayArye, GCT for the Declasse Alamo
Eddim for handling
Actually Toxic for the PPV Alamo edits
11john11 for console, trunk equipment
Jacobmaate for the Lore Arjent, misc interior parts from lifeguard mesa
AlexanderLB for console textures
(if you see any resources from you in this pack, message me and I'll add you and apologies in advance) 