These are 1/8-inch mild steel reinforcement plates that Krellwitz and Rivera were welding to the front framerails. "This is tedious stuff," Krellwitz said of the job, which would take him several hours. "But if I don't do it, the truck won't last. There'll be cracks all over the place." Why the holes? The OE framerail is so thin, if Krellwitz welded only the outside edge of the plate, the welds wouldn't be strong enough. So he'll weld inside each of those holes. "There's so much tied into the front of the truck it really needs the strength," he said.