The triton head problems have been greatly exaggerated. The first problem was part of the spark plug breaking off in the head due to carbon buildup. Sounds like a disaster, doesn't it? Not really, though. Go get Lisle plug extractor (about 100 bucks) and 20-30 minutes later you're good to go. The oem plugs will start breaking off around 40- 50k on the odometer, but the upgraded aftermarket plug will last around 80k. I have heard of heads having to come off due to plug siezures, but have never seen it happen. I keep expecting them to sieze, but they never do. Fords fix for this problem wasn't a very good one, either. The 2nd design plugs do not have the seizing problem, but they do blow plugs out due to the new plugs not having enough threads in the head. But don't worry because this is an easy fix, too. just put a helicoil in it and you're fine. again, an easy fix. Considering how impressive the 5.4 has been through the years, these problems seem minimal to me.
