How to install:
Using Spark IV or Open IV open file vehicles.img from folder C:/Program Files/Rockstar Games/Grand Theft Auto IV/pc/models/cdimages
Then import one by one all the files you find in folder vehicles of this zip file.
Files to be imported :
Original Idea : Xavier Baez
Build : Ariel Santarelli
If you want this to work on the other cop car you must replace the vehicle_generic_police_livery that is in the vehshare.wtd(also in the vehicles.img)you can use the same image just change the name![size=7]