Geez, isn't the SOHC like 200-210 HP stock? I mean, that ain't too shabby for a SUV. My 5.0 has about the same power and I think it is fine for what the vehicle was produced to do. It is not a sports car! It is not meant to be! If someone wants a vehicle to go fast and drive on the street, get a fast car. It is incredibly cheaper (and less hassle) than buying a SOHC X and making it into a fast street vehicle. Don't get me wrong, I understand having more power in a truck (used as a truck) is very helpful, but 210 HP in a 4300 lb SUV is more than needed to do what it it meant to do. I just can't see 3600 to get some more power out of it. From what I have learned, the SOHC is stretched out about as far as it can go with only 4.0 liters. Seriously, it is only 4 liters, it ain't a 351.
Robb
btw: I await the flaming