I got this info from a B-1 mech a few years ago. The hatches can be opened during maintenance procedures, but they can only be opened so far. There is a pin that breaks if you open it too far during a non-ejection sequence. The pics I’ve seen show the hatch opening only enough to let in a flexible air conditioning duct.
I”d recommend using Eduards PE set for both cockpits. The kit aft pit panel is wrong for a current a/c. The Eduard kit also comes with a color inlay for both instrument panels, which stands out pretty well. Take a look at the pic of the two aft panels side by side, with the Eduards on the left, kit on the right.
Here is a close view of the Eduards aft instument panel
This is the only pic I have handy that shows the front inst. panel.
The metal noseweight is fom Terry Dean Castings, & is very worthwhile to have & inexpensive to boot. If youi look closely enough, you can see the throttles on the center consoles, & the carpet in the front pit. I used scale model carpet flocking for cars to do the carpet. I was just messing around with it. Cant see it when the other side is glued on.
At one point, I had 5 of these kits, but now I'm down to three, with one still up for sale.
Are you planning on doing one of them in the three-tone Strategic Camo scheme?
Chris Ish