This is BASED ON the South Korean police heli. I know that they don't use the eurocopter but it is my favourite and is well modelled in gta5.

Credits to Game68240 & MattZepol for the model!
https://www.gta5-hub.com/vehicles/eurocopter-ec145-gendarmerie-template

Install here:
mods\update\x64\dlcpacks\patchday3ng\dlc.rpf\x64\levels\gta5\vehicles.rpf\

NOTE:The lower part of the heli is bugged as it have set it to replace the Polmav (Police Heli) To fix this instead rename and replace the supervolito files in the following location:

mods\update\x64\dlcpacks\mpapartment\dlc.rpf\x64\levels\gta5\vehicles\apartmentvehicles.rpf