same here- thanks to the 4.10s in my Duster, it gets lousy gas mileage even with the stock 360 that's in it now. But, usually, I drive because I want to, not because I need to get somewhere. High gas prices won't kill that in me.
My DD is either my Stealth or my 2000 Jeep GC (with the 4.0). Either gets waaaay better mileage than my Duster (and thanks to the 400hp, my Stealth is even waaaay more fun to drive:D)