MC engine freeze plugs

[Lines Peter]

On the MC turbo engine, there is a freeze plug that has a coolant hose
nipple.  It acts as the coolant return point for the water-cooled turbo.  My
question is, which position is it in?  (#1 being the front, #5 rear)  I know
it's not #4 or #5 because it would be covered by the motor mount.  I'm in
the process of doing a 4kq turbo.  I started with a KH block (air cooled
turbo, no water line) and I'd like to put the correct freeze plug in while
I've got the motor on the bench.  Can anyone tell me, from looking under the
hood or maybe the family album, which position has the coolant line.  Anyone
know the part number for this special freeze plug?  Thanks!

Peter Lines