Thanks 
I think
OffCenterProjectionOffset
and
FMinimalViewInfo
weren’t in latest build of UE one year ago when i did this, but maybe i am wrong.
To edit perspective matrix i found nice trick in this thread https://answers.unrealengine.com/questions/65003/howto-modify-the-projection-matrix.html and i did some modifications in order to work properly.
Stereoscopic rendering wasn’t supported by UE at the time, except from some experimental flag which was designed only for HDM devices and i was unable to combine it with my custom editing of projection matrix. So instead of this i used split-screen where i represented each eye by one player, set to windowed mode and stretched window to two displays so each projector projected scene for one eye.
Feel free to download whole project if you want
https://drive.google.com/file/d/0B_d53Ogw02LhWUF0cXhYaV9sWmM/view?usp=sharing