Scott,
I flew in Aluminum Overcast a few years ago in California. Did you get up the nerve to sit in the Bombardiers chair??? I did but my buddy would NOT.
The top turret is removed, bubble is still there but the mechanisim is out of the way to make more room behind the pilot & co-pilot. Standing in the radio room was a bit scary since all it would take is to hit an air pocket and you'd fly right out of the plane!
David