Yo guys how much reliable HP can you get on a new 6.4 motor with a good tune, DPF, air intake, intercooler, Suncoast tranny and converter. But reliable as in daily driver and putting #50,000 to #75,000 thousand miles on it?? I want it to last 4 to 5 years. I would go with a on the fly tuner. So i can run street when i want and if i want to go fast i can just tap and be in extreme. But looking for numbers that are safe for the truck. Not so high that i have to get new head gaskets or other stock parts are going to go.