Around town I get between 20-23mpg. When I did my trip to Atlanta (Modular Powerhouse Dyno Day) I got 30 mpg. Cruise set at 75 and AC on. Rear end is stock 3.27; hopefully not for much longer.
18-25 I got 18 once when I drove a tank full of gas and stayed under 2K the whole time, even accelerating. Now, if I drive it normally (IE: 3k to 2nd then like 3k or 4k to 3rd and 3k to 4th) I usually get like 18 to 20mpg city. When I took a 1800 mile round trip to Illinois and back from Virginia I got 25 mpg. That was all 93 octane. I'm going to try it on 89 and see what the difference is.
All with 4.10's.
EDIT: I could run out of gas at 300 miles. I generally fill up every 240 miles or so.