Replace All Spark Plugs and Wires

What happens here

After the single coil pack replacement didn't resolve the misfire, the presenter removes a spark plug from a suspected misfiring cylinder. He immediately notices the spark plug is heavily worn, with a significantly large gap and signs of carbon buildup and erosion. This indicates it's likely the original plug from when the truck was new and has been in service for 200,000 miles. Given the state of the first plug, he decides to replace all eight spark plugs and the corresponding spark plug wires, using new AC Delco parts.

Goal: Resolve engine misfire by replacing all spark plugs and wires.