It was divided into two parts since the mod was for 1.36 and 1.38 there are files that change the way in which the mods are executed, update texture errors, glass errors, etc., with the sounds at the end it does not add the original but if you adapt Mack sounds from that era that sounds similar to the original.
– Pack Motors
– Various chassis
– Improved textures and interiors
– Bugs were fixed
Credits: After G