As to the comment above about Cat parts I can testify that it's completely true.I just got through this week with a 98 day rebuild of a 6NZ.Parts were almost nonexistent. I had to source at least 50% myself as Cat couldn't find them.No turbos,no cams,no rockers,no front covers,no injectors. I spent days on the phone calling dealers to find this stuff. At least I still got my Cat warranty. Where did all the parts go?