HIGHLY RECOMMENDED that you use one of the available Engine mods or engine packs that has been made for 1.40 FMOD that is on steam workshop , mod uses base scs software sound Animated windows roll up & down weigh station Device fixed shadows Fixed againg the fender gaurds clipping through the stock bars Fixed fender gaurds clipping through the headlights Fixed interior sunvisor reflection. Fixed cabin light shining to the floor from external view. Fixed over blown light flares. Add new bumpers with light nodes for extra lights The Peterbilt 379X is a Limited Edition version of peterbilts legendary 379. Standalone Truck for 1.45x