I have a chance to buy a 1992 dodge 5. 9 cummins that has around 100,000 miles. 4-wheel drive extended cab long box with a flat bed. The truck has been getting oil in the radiator and he has replaced the rear diff. 3 times since he has had it. I know the truck has been well cared for and mantained. It would be helpful to hear some prices and hear what you think it is worth.