I would jokingly say 3.5 years but i belive the 2006 4.2 Inline 6 is around 6 seconds. Its a SUV thus not built for speed but for versatility! So slow off start but power in mid range and torque for pullin and muddin!
After 2 days of screwing with mine here is what I found:
Open the hood
There are 2 clips on top of the headlamp unit. Lift them.
Pull the headlamp unit away from the vehicle.
In back of the head...
Remove 3 screws on the big black box on the right hand side by the coolant reservoir and remove the metal bar it has on the side by the rod that hold the hood up. And the filter is under the black...
Fuel filter is located inside the fuel tank so you have to remove you fuel tank to replace the fuel filter. I had a problem with mine and had to replace the fuel pump and filter at the same time.