[mcmancuso]

Last metro I bought cost me $300, and my one before that $600, both in running condition, you can pay that much just for a mod on a big truck like that. I mean a bed cover, even just a square one would cost more than my cars did.

Is the truck auto or manual? Probably the BEST thing you can do is learn how to pulse and glide (probably +10MPG), but you can't REALLY do it effectively in an auto transmission vehicle.

Also never go above 55mph, with a big flat front vehicle, going above 55 is going to drop your mileage big time.

These 2 changes are free, and will net you bigger gains than ANYTHING you can do to that truck.

As far as mods in price order, a grill block, and underbelly pan would help with the dirty airflow, but you probably can't do those because of how hot it gets in AZ in the summer. And the sloped bed cap (custom made), but even with those you're looking at maybe 5-6MPG on the highway, no gain in city driving. and would take a long time to ROI.

Modification of driving style will help the most in a vehicle like yours more than any mod except swapping engine and transmission.