[ADD-ON] INSTALLATION:
Choose folder with your preferable plates shape and:

1.Copy "dsbreak" folder to :\Grand Theft Auto V\mods\update\x64\dlcpacks
2. Using OpenIV, go to: \Grand Theft Auto V\\mods\update\update.rpf\common\data  find the "dlclist.xml"
and add the following line:
<Item>dlcpacks:\dsbreak\</Item>

spawn:cars -> sedans -> Citroen DS Break

N O T E : Active suspension features are not compatible with some other mods ("vstancer"mod, or autodrive option in "Menyoo"...as I tested, car remains low) It also doesn't support pirate versions of the game (I just tested some - car remains high ). 

WHAT CAN YOU DO?

If this incompatibility with other mods is a issue for you can (after installation) just replace "Add-on" vehicle files (dsbreak.yft and dsbreak_hi.yft) with the ones in the replace folder (regina.yft and regina_hi.yft) it should fix it...
... but test original Add-On car first, maybe you like it:)