You're welcome. The reason that most people are disappointed is that they confuse an opened up engine with one that is force fed. Yes, headers like this do give you an increase in power. It's not as larger as what you get from a turbo, but that's because headers let the air flow through (out of) the engine better while a turbo will force more air to move through the engine. I rarely tow heavy and if it wasn't for me liking to ride ATVs in Colorado at high altitudes, I most likely would stick with the headers. I just don't need more than that very often. When I was visiting Thewespaul last January, he set the timing on my truck. He wanted to follow me on a test drive after that. He said that it looked like my truck ran pretty good for being N/A. I say that if you want to experiment (like Wes does) then go for it. Just be sure to let us know your results. Just remember that this is your truck and do what you want with it.