I have never seen a kit of that exact bus. You can make it pretty easily from a couple kits though. There is the Arii 1/32 Japanese Bonnet Bus.
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You can combine it with the front end (hood, fenders, and grill, etc.) of a '30s truck to make it what you want.
Here is an example of one using a 1/24 '50s Ford truck front end.
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Or a MASH bus using another 1/24 '50s truck front end.
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You will also have to reposition the door and switch the driver's position (from right hand to left hand drive).
A bit of work, but doable. I have one and plan on converting it...eventually.