Download mod Retro Skinpack for Peterbilt 359 by RTA v1.0 (1.33.x) for ATS | American Truck Simulator game.
This is a Peterbilt 359 (RTA version 2.0) skinpack of 7 skins for all cabs
If you don't like paid mods then I did this skinpack for Viper's free mod here back in 2016: https://steamcommunity.com/sharedfiles/filedetails/?id=795995398
Tested on game version 1.33.x