You are probably looking for something similar to that:
http://www.subsim.com/radioroom/show...67&postcount=3
Don't get confused by the name: the author of the "Open Bunker" is our friend Jeff Groves, a.k.a Privateer, a.k.a Madox58.
He never released publicly this mod (I think for him it was more a proof of concept than a real mod), and the last time we talked about it - a few weeks ago - he told me that he couldn't find anymore the relative files on his HD, but he also added that, if needed, he can redo the work
