A heads up to you Ford owners. Make sure you put anti-seize on the spark plug threads when you change plugs (if you can get them out). These plugs use a 14 mm socket and they don't look like your usual spark plug. They tend to get stuck in the head and they break apart, leaving part of the plug in the thread hole, requiring the removal of the cylinder heads (ShopKey labor time puts it at 25 hours for the job).
Ford has changed the design of the plug from the original and has a special liquid you spray in the spark plug holex to help free it up before removal, which doesn't always work btw.