I am looking to buy a 99 F-350 xlt 6 speed Diesel 4x4 with a Short wheel box and a single wheel rear end. This truck has 140,000 miles on it. The owner is asking $14,800. I am needing some suggestions on what to offer. I will be paying cash for the truck so hopefully that will help on getting a good price. Right now I am thinking the top dollar I would pay for the truck is $13,800.