I have a 94 regular cab long bed. I am running 3:55 gears with a 5" skyjacker package and 35x12.5 procomps. I have the manual 5 speed tranny. I track my milage with every tank and keep it logged in maintenance log I keep in teh truck. Here goes:
before the lift: 15city, 20 freeway.
after the lift : 12city, 17 freeway
the best I have seen after the lift was on a trip to LA on I-5. I got 20mpg with the gate down and the ac on cruising at about 75-80. By the way, 78 MPH = 2000 RPM now.
I runa GPS in the truck all the time so all of my number are from that.
Anybody donr a fuel tank upgrade? I hear that you can't run duels on my truck but there is a larger tank that you can get. I'd be interested in that. Right now, I can sqeeze a bit over 500 out of a tank. If I can stuff in a 40 gallon tank, I could get 800. That would be too sweet! I would have to fill up but every other month!

: I could buy on the dips in the market.