I looked into this back when I was building my '31 Tudor. The '32 body has the indentation to allow the tank to tuck up under the body.
There used to be a faux '32 tank that was made for Model A's, best of both world's. Check this link out: http://www.tanksinc.com/p_view_image...conversion.gif
Got any photo's of your in-progress set-up?