Torque to yield, head bolts...

Did head gaskets on a ford 3.8 supercharged, aftermarket bolts failed in the torquing process, ended up using oem original bolts i removed. If they arent bent or necked down they can be reused.
I think it also has to do with no retorquing. I wouldnt want to go back into a ford 5.4 to retighten head bolts...double the thousand dollar job.
Dont care for it,leaves me wondering if its going to let go.they do break.