1998 Ford F700 22 box truck

Gas, 22’ Box Truck. She starts up, but it might take a minute or two, once on the road it will run all day, but there is clearly a hesitation around 35mph, but once at 40mph+ nothing seems wrong. The odometer is broken and 117K. It was used as a spare two weeks out the year 2 years ago. Since then it has only been turned on to run for a couple minutes. I would guess actual mileage around 125-130k. It ran for Fedex for 5 years. 40 Miles a day/ 5 days a week and around 15 stops per day. Before that, I do not know. On other commercial sites, similar trucks are listed form 6500 to 11,000. I chose the lowest range to sell FAST!! $6,500.00/OBO