OP, Pretty certain you have a highly prized D/A combo there. If it were mine, I would take a good long look at the current condition of the vehicle and make a decision. If the body and interior are in pretty good shape, I would consider taking it to a quality and trusted mechanic and invest a couple thousand into replacing parts near the end of their life cycle. For far less than the cost of a new truck you can replace injectors, water pumps, upgrade/rebuild a transmission, wheel hubs, etc. Then you will have a reliable truck, in good shape, ready to go another 100K miles at least.
If the body and interior aren't in that great a shape, perhaps it is time to upgrade the truck. There is considerable upgrade in trucks in the last 11 years. Power is up, interiors are nicer, there are more options available etc... it just costs money.
