Making a unmarked car

i wanna make a couple of unmarked cars, my server isnt running els atm and so i wanna make a unmarked that no one will expect but something that would fit in Sandy Shores, id like to learn how to make a unmarked/marked cop car, if anyone has a tutorial, or if anyone can point me in the right direction.

are their any zmodeler 3 subs i can use, dont really have money to spend on it.

¯_(ツ)_/¯

You could search the interwebs and find a already unmarked model or skin a model that you like to fit your needs like many people do…

okay and off topic question i wanna add a car into my server as well but its a replacement and i dont want it to spawn with NPC’s how can i make it into a addon