I got a buddy who bought a 04 6.0 its a nice ttuck but had to have the top end rebuilt due to a previous owner doing bad work. All work done at ford stealership. He is wanting to make it reliable and have some added power. Can any one tell me what we need to change or upgrade. I know for sure a egr delete kit and head studs. But what else? The plan is a sct tuner or livewire havent decided yet. Along with a cold air intake, blue spring,6.4 banjo bolts. Also looking at a mtw powermax turbo. Can any o e explain what the bullet proof kit is and or consist of? Any ideas or opinions would be greatly appreciated. The truck tows daily but. Othen super heavy under 5000 pounds.