06 here, 160k mi , I love it, but there are some maintenance items you need to be aware of . Here is my parts list so far:
4 injectors
high pressure oil pump
injector pressure sensor
injector pressure regulator
egr delete
oil cooler
rear end rebuild
front wheel bearings
fuel injection control module
caterpiller elc coolant
blue spring fuel pressure regulator upgrade

the egr cooler goes bad and leaks coolant in to the cylinders causing head gasket failure. The coolant gets overheated in the oil cooler and clogs it up causing oil cooler and egr failure. If it stumbles when cold you have injector issues. I bought another 6.0 i would replace the oil cooler, do an egr delete, and use cat elc coolant before i even drove it.

It also has a cold air and 5 inch exhaust, next mod will be ported/o ring heads and intake with a-1 head studs.