I have had a 6.fo for a year now and i love it. I have had no issues for 30000 miles running the biggest tunes i could and was stock for 53k before me, I beat the crap out of mine before and after the head studs and not once did I ever have it broken down or out of commission. Only problem I ever had was a tensioner went at 72k , trucks at 83k now. Stock trans mission and mods are in sig