Feature: Cummins NH-220/230/250 naturally aspired and NHS-275/300 supercharged engine with straight piped sound Backdrop manifold for NH models and split manifold for NHS models Early adaption for 1.47 sound update Max volume regulation to reduce chance of sound flickering and prevent too loud sound (Highly recommended to put engine, exhaust, turbo volume slider to max) Sound attenuation effects for realistic sound fade off from the distance Sound distortions and directional effects for realistic distortions from different positions around the truck Included Customizable Additional Supported Trucks (CAST) in the mod Quick tutorial on how to use CAST 1. Goto def/vehicle/truck/ 2. Rename one of zcustom_xx into truck def name you want and you should good to go |1.46-1.47] Credits: Slav Jerry, Serialblack