Thanks to Thatoneiowan, on whose work this mod is based (http://www.gtainside.com/sanandreas/cars/98872-flint-county-emergency-services-mega-pack/)

To install this mod you will nead a Software like Spark or an other IMG Editor. 

Just repleace the copcarvg.dff AND the copcarvg.txd with the files in your GTA3.IMG (Your Game Directory\models\gta3.img)

