I have 7.3 2001 F350 with which I have had zero problems, though low mileage. You may or may not be aware of this guy, but I found his videos informing though he is a bit crass, and in some camps controversial, but has a whole lot to say about the various Ford diesel engines. I believe he has a video(s) on how to bullet proof the 6.0L. I know many have posted getting rid of it. I would just add that, depending on whether you are consider new or used, if you could achieve a reliable engine for 10% of the cost of a new truck, I might tend to go that way....assuming of course I had enormous trust in who is doing the work, and therein lies a major concern with that alternative. Search YouTube for Powerstrokehelp, the following url is one in which he compares the 7.3, 6.0 and 6.4: http://www.youtube.com/watch?v=I_dhaWv9Z4k. I bought my F350 in 2001 with the intention of buying a TC within a year, well that year went to 2011 but with the 6.0 problems and the later and latest EPA requirements on diesels, I'm glad I got the 7.3 when I did, btw I "saved" it for the TC, it only has 70K miles and is in mint condition.