With these textures you can switch the cabin textures of your truck and the npc truck's around with some extra details. Replace the textures in sharedassets3 with Unity Assets Explorer. OPEN THE README.txt in the .rar file so you'll know what names to look for.
ps. the truck that's on the right side of fleetari's is going to too.
ps. the truck that's on the right side of fleetari's is going to too.