The engine room? Do you mean the engine bay? I imagine they all look the same, not too much would've changed between generations.
The first screenshot looks so good! An extended roof fifth wheel, with chrome wheel arches and an exhaust stack, and it’s the big hood, even! Awesome!
But I'm still curious about the radiator system, the fan model connected to the engine or electrically
The gasoline engines and the 6.0 diesel don't have a fan just like the other Gavrils, the 7.1 I6 has a mechanical fan with a clutch