If your truck is going to be used as a working truck then the spring steel brackets are required. The way our trucks are used in 2021 mild steel brackets are fine. We heat the strap in a forge (rosebud can be used) till YELLOW hot and then form it to the shape needed to fit the bumper and frame. A bracket on the fork lift holds bumper rigidly in place while forming is happening. All thread with nuts and washers is used to draw the brackets into final contour. Do all this before bumper is re-chromed.
