An interesting stab at the concept (rather like a Shutzenpanzer HS.30) - but there is an issue - you can't have the engine & the passenger exit at the back - the engine would have to be moved to the front, along with the air intakes, engine access etc.
Perhaps the HS.30 would be a better starting position for a '46 APC, the hull has the necessary depth absent in a tank hull for passengers - slapping E-50 running gear on it might work (I'm sure I've seen someones render, I'll have a look).