In Canada, our 2.5 Ton trucks have the frame extensions for the winch on all the variants and models I've seen and worked on, whether or not the winch is installed. With the bumper farther out from the original location of the B.O. drive light assembly below the left headlight, the B.O. light would not shine it 's beam onto the ground. It was decided to move the B.O. assembly to the rear of the front left side of the bumper in the location of the hole in your trucks bumper. The front bumpers of all Canadian M-35/36 trucks are installed with the "dip" at the top and the holes on the left. Hope this may help answer your question.