I've had my Dak for 30k miles. It has 78,190 at the moment.
-new water pump and fan
-fuel system issue (nothing too costly, though)
-the 3.9 Magnum gets decent highway mileage, just don't spend much time in town with it haha

 

my 01 4.7 auto AWD has 220,000miles and no major problems yet....... sure regular wear items needed to be replaced, some more than others. my truck eats up front brakes and shocks. all 4 ball joints go rather quickly on Daks, but all in all, these are hard workin trucks and can take some abuse.