Well now most of you probably have heard Lionel has brought out an American Flyer SD70ACe. Several road names, UP, BNSF, NS and KCS to name a few. I picked up the KCS which was offered with scale wheels. Otherwise they come with highrail wheels which means larger flanges and fatter treads. Both versions come with the AF coupler but Lionel included spacers and screws to install Kadee couplers. So these pictures of my scale wheeled KCS still has the big AF couplers but it was photographed on code 83 flex track.