A guy called Kegetys came up with a hack that enabled 6dof (in the past, he never released it, just did some demos- try youtube). It worked quite well in some of the newer cockpits, but many il-2 pits date from <2000, and too much effort to be updated- considering that BoB will have full 3d cockpits. It's a shame, as planes like the FW-190 really needed it. Still I can wait...