From everything I've read unless you plan on boosting over 30psi the factory head bolts are good, over that need the ARP stud kit which run $400+ . to bad you can't go full delete on it, that alone wakes these trucks up. I glad I did my 14 Ram course up here theres no smog laws, power and fuel mileage jumped way up.
There’s a Canadian made competitor called Xotic performance that makes studs for them now. ARP studs for a Cummins are pushing $500-600 depending on which kit.
The Canadian ones have actually been performing better than the ARP stuff for half the price. My buddy that sled pulls professionally still steered me towards them. They did a stretch to breakage test. They go thru head studs often cause they’re rebuilding every few pulls.