Old rusty game-ready trucks (GAZ-66, different variants)

Old game-dev model, created in August 2017 during my work in IUACG (first studio where I used to work). This model was created to be used as static asset. It's old soviet military&service car in different variants: mobile radio point, mobile command post, truck, firefighter's car. Also there was a variant of truck with ZU-23-2 (air defence gun) in it's body, but I can't find it.