Cummins ISX/X15 Stock Sound v1.0 [1.42]

This mod is Cummins ISX12/15 and X15 engines with stock sound
This sound will be replace Cummins engine sounds in SCS trucks and selectable engines in modded trucks

Feature:
Cummins ISX12, ISX15, X15 370-605hp engines with stock sound
Separate engine and exhaust jake brake sound
Air compressor run sound
Custom sound attenuation for better and realistic sound fade off
Custom sound orientation for realistic sound from different angle
New interior noise system for deeper and quieter sound in cabin