Aluminum case 833 identification

AJ/FormS said
Pop the side-cover and you will instantly see the OD gears.
Alternatively, put the trans in "3rd" gear and compare the input turns to the output turns; if both the same, then it's an OD.

For the cost, you might have a steal there.

I thought the 3 and 4 lever had to be pointing to the top of the transmission on OD transmissions and the 3 and 4 lever pointed down on a normal 4 speed.