Anyone else ever have to replace these things. A god buddy of mine works at a custom exhaust fab shop and they don't even mess with these. they send them out to another shop. He said all pickups do it frequently (Chevy, Ford and Dodge) and says the Fords are the worst to fix. Mine was on an 04 Chevy 2500 6.0 liter. I was lucky tho, I guess usually they break off flush with the head and they take a mig welder to the bolt and build up the area with enough metal till they can weld a nut on. Out of the 12 bolts that hold the manifold on, 8 of mine were busted but none broke flush with the heads. it's a B&$%^ getting them out though. I used a ton of PB Blaster and Thrust oil and then a big pair of vise grips. There was enough bolt left to where I could slowly work them all back and forth to get them out. I could only get about 1/8 of a turn each time so it took me a tad over 4 hours yesterday to get them extracted, then another hour-ish today to put new ones back in. 12 bolts costs 29 bucks at the stealership, but it beats paying a shop to do it. In real bad cases on Chevys, the heads have to come off the block and get sent to a machine shop to have them each drilled out. So whatever brand pickup you have, go check your bolts, I bet at least one or two is busted off. This is super common apparently especially when the truck is under heavy load. It amazes me that the manufacturers know about these types of problems yet do nothing to fix it. There's plenty of room on the 6.0 for a bigger bolt and they certainly coulda used a better grade of metal in such a harsh condition. whatever's cheapest I guess.