My 04 F350 6.0L (187k mi) is in the shop right now getting one broken exhaust manifold bolt replaced. Mine was/is the passenger top rear bolt. I am having them replace all the bolts on the one side and adding the gasket. They estimated 2 hours for the repair. The book rate is different from passenger side vs drivers side. I believe the drivers side was quicker. Both sides were estimated at 3.5 hrs.