The hump will be moulded to follow the various contours of the floor pan. (assuming your floor pan is stock)
ie, there's really only one "correct" position, so it's hard to get placement wrong.
Beyond the actual position of the hump, there's some cutting involved in the floor pan to allow clearance of the shifter/rods. But since you're installing something other than an A833 tranny, I wonder if the stock-type cuts would work, or be needed with your non-stock tranny... ?