6.0 have had there fair share of trouble,like all stated before..injectors,egr coolers/valves, head gaskets and high pressure oil pump/fitting concerns...but beyond that the bottom end is bullit proof..I work for Ford as a tech and have stayed busy..lol...In all honesty though, if you can get one and can buy it right to afford to do a few things too it,you will love it..We have many customers come in and say do what you have to do to make it strong..Start by installing arp head studs, delete egr cooler, replace all high pressure orings and fittings,, and last of all simple fix to extend your fuel injector life is to remove the fuel pressure regulator spring in the secondary fuel bowl,stetch the spring out a little( which allows higher fuel pressure), and you will have a truck that will last a while..I know this sounds like alot,but if you purchase it right, remove the cab and do everything at once, you will be good to go..I have bought a few trucks needing head gaskets, did all of this and sold these trucks to friends and have never been concern of selling a piece of sh.t to a buddy..Good luck with what ever you get..as long as it gets you to the mountains!!