Hi, I am looking to replace my 2006 Chrysler Grand Voyager 3.3 V6 auto, with a 2009 Chrysler Grand Voyager 2.8 CRD. AS my old Voyager does not have a cam belt, but the new diesel one does, I need to know when do you change the cam belt, cam belt kit and water pump, At what millage or years.?? Also is it the same diesel engine in the 5th Gen as in the 4th Gen. ?? Thank you Jason