I either read, or was told, that you need to replace the head bolts on the 2.6L engine. My 2.6L was blown, and my rig is sitting there, waiting for me to find a garage and decide whether to install a 4.3L, so can't tell you from experience about the head bolts.

Also seems as if a number of our forum members recommend using studs, but I haven't paid much attention to the threads that address this issue. Do a search, should find comments in the last month.

Good luck with your head replacement. Those Clearwater replacements (new casting without the jet valves) get good marks on this forum.