Can you find the fbi truck on gta sa

there is an FBI truck available on GTA SA can you find it anywhere

I don't know about GTA SA, but in vice city; what I did for those was to raise up my wanted level. I would then have them chase me into a building that I could snipe them from. When enough cops are gone/dead from their original car, I would proceed with using a cheat code.. then take the car. You should try this.