Spoke with a Cummins rep. regarding a remanufactured 5.9 long block for my 2006 dodge ram 3500. He indicated that it may come with cylinder liners installed, depending on the condition of the core block used in the rebuild, and the liners machined to accept standard sized pistons. I have heard negative comments regarding the use of liners in these engines, (pressure leaks into crankcase, pitting corrosion on liners, etc.) Any information regarding the pros and cons of this set up would be appreciated.