POLICE2 & SHERIFF2: All the files inside the 'police2 & sheriff2' folder goes to: update > 圆4 > dlcpacks > patchda圓ng > dlc.rpf > 圆4 > levels > gta5 > vehicles.rpf POLICE: All the files inside the 'police' folder goes to: 圆4e.rpf > levels > gta5 > vehicles.rpf Then drags those files into these locations:
Open up Open IV, choose GTA V and enable edit mode in order to make this work. This modpack might be updated later so keep your eye open for a possible update within a few weeks. The BMW 525D E60 by Double Doppler can be a bit weird sometimes, so atleast make backup of that file. Before installing these mods I highly recommend you taking backup of the files you're going to replace.