i posted on this forum back in august about my 95 3500 dually 4x4 that my wife surprised me with. it has 35000 miles, a 5 speed, and 4:10 rear end. we do more traveling than pulling, and the high rpms eat my fuel economy. we are planning a trip to california around christmas, and i sure would like to get decent milage as well as being able to cruise at a bit higher speed. anyone out there with a 4x4 with 3:54 rear end gearing that might be interested in trading for a set of 4:10s? i would much rather buy an overdrive or 19. 5 conversion, but simply cannot afford it right now.