I have never seen a picture of the front drain. It is somewhere above the transmission.. and quite difficult to access, from what I've read on here.
The rear is directly under the unit in the left rear quarter panel. I don't recall whether the drain for that one is accessible.. I do know the sunroof drains in the same area are around a corner and require removal of the bumper skin to really see them.
As far as I remember it is directly on top of it. The AC evap core is centered in the dash.
You might try doing some searches where people were trying to find water leaks in the cabin. Someone ripped out their whole interior.. as part of that or maybe another thread someone tracked it down but it was VERY difficult to get to with the transmission in place, as I recall.