Hi guys I have a 2005 F-550, 16' van box on it with the 6.0. I have a hoist and I'm going to pull the cab to fix a problem and figured i would replace as much as I can so the cab can stay on for a awhile. Ik these trucks are Notorious for oil cooler probs so was thinking of an external one also being stock I feel the new redesigned head bolts from ford should be fine instead of arp what else whould u guys do? This truck is a company rig it is not a race truck and dosnt get beat on and will be 100% stock no tuner ect. Truck is full 24/7 and it's hard to put a number on all the stuff but I would guess anyware from 5000-8000 pounds r in it at all times and it has a trailer on it most of the time depending on witch one could be 5000-15,000 pounds. All the info I could get would be nice thanks.