Just bought a 2010 lariat with 60xxx miles 6inch lift on 37's. Had it two weeks and so far everything seems legit. Perfect interior and damn near flawless outside for being 4 yrs old. My question is. Is all the hype about the 6.4 as bad as I read? I know a dpf delete is a must but that ll come with time. Anything I should be looking for? Any tell tell signs something's bout to **** out on me?