Despite common opinion the head bolts are not torque to yeild and can be reused also. If you torque them more than a few times I'd replace them though.
I'm not doubting you at all, but where did you hear this from? I've been trying to figure out all the hardware I need to replace to get my engine back together and the fewer pieces the better at this point. Don't have $300 for head studs right now and even though new factory pieces are only ~$40 the more I can save the better. I don't suppose I'm fortunate enough that the main bolts are the same way? Saw the torque spec was a quarter turn after some value (similar to heads), but having a hard time finding OEM replacements.