That looks like a 10 speed Fuller Roadranger, I drove a 1988 38 foot Crown with a Turbo Detroit and a 10 speed, a real beauty, only a few years old back then. Once you get the hang of it, you won't need the clutch but to start and stop, even skip gears...The non-turbo Detroit's are even easier to...
Too bad that bus will probably follow her into retirement before too long.