2001 Dodge Cummins
 

Ok guys I have found a 2001 Dodge Cummins with 268000 and a five speed for $6900. The exterior is in pretty rough condition but interior is alright. The truck has a FASS fuel system, hide-a-ball 5th wheel. Transmission and clutch rebuilt at 180,000, replaced the injector pump at 150,000, new turbo, front-end mostly redone, new AC pump and filter, new starter, new master and slave cylinder system for the clutch. Is this truck worth the asking price?

It could be.
If there is a diesel shop in your area i would take it there and have them do a full inspection on the truck.
That will give you knowladge in stuff that may be starting to go out or is ok.