The screenshots are at http://www.wolfenstein3d.co.uk/x1pics.htm .
EDIT: The mod has now been posted at http://www.brlowe.co.uk/Roman6.zip . ps. - Although a DOS exe has been included, only the Boss level plays with that. The other levels have too many objects for it to work. The game needs to be played with the Roman6.exe which is the NewWolf exe.