Anyone who thinks they are getting over 4 MPG improvement in gas milage by taking off the fairing and basket is smoking something illegal.

Concider the friction of the engine, tranny, axles, tires on the road, the weight of the truck and then add that to the overal drag of basically a box being moved down the street.

Now stand infront of your truck. Look at the overall surface area of the truck from the very bottom to the roof. The faring makes up probably 5-8% of the ovel area? Now walk around to the back. Because of the rise on the roof, the basket makes up maybe 3-5% of the overal surface area.

So between the mass of air the Xterra has to move to fit the fairing (and it's one of the most angled areas of the truck anyway, and fills a hole as the air goes up and over the windshield, probably reducing an air pocket) and the drag behind the basket, it would be generous to belive it makes up 5% of the overal drag of the truck.

Discounting all the other factors that affect fuel milage, a 5% decrease in drag would acount for .75 MPG increase if you started at 15MPG.

If you drive 10K miles a year, you save yourself about $70 in fuel. I don't think I'll make the switch.