Yep.. 6.4`s are very good and strong BUT, they rely strongly on good maintenance and getting rid of some of the restrictions. Also when they do tear up they can go catastrophic very quickly if you don`t pull that bitch over. The 6.7 is awesome but, still out of my price range as well. You can say what you want to but, a 6.0 done right is a damn good motor. Period. The problem is getting someone that knows what the **** their doing and just not taking your money. I`m telling anybody wanting a 6.0 take that bitch to KEM in Monticello GA letem do it right and I promise you`ll have a good truck. There`s still to many **** stick shops that don`t do these motors any justice. You ain`t gotta put no external oil cooler and all that ****. 130.00 coolant filter and a good monitor (SCT livewire) will save you tons of money in the long run. I wouldn`t give a bucket of piss for a fummins. Does it suck that you`ve got to do a few things to get it right? Yep but, blame EPA. Look at it like this it`ll cost you as much to get a cummins transmission built to hold up worth a damn as it does to get the 6.0 work done. Friend of mine just spent over 3 grand having the injectors and his frontend replaced under his chevy for the 2 time so just pick your poison. Lastly if it were me I wouldn`t want a 6.0 that's already studded cause you don`t have a clue who did it. Hell find one that needs the work get it cheaper and carry it a reputable shop and have the work done so You have the warranty. Good luck finding cheap 6.0 though. The price on diesels is high right now. Especially 6.0`s cause most people done figured out to get these bitches right.