It depends. Studs are meant to be threaded in by hand when installed. They do not get torqued until the nut is on. In many cases with mopars, the studs can be removed by hand or by "double nutting" them to remove them, then the head comes off normal. I dont think you can get the head over the studs with power brakes, and some cars they may interfere with stuff protruding from the firewall too. I rarely use head studs for those reasons. ARPO head bolts are almost as good. Also, some header flanges will not fit without cutting the excess stud down. I know this is the case on big blocks. I think small blocks are ok. I mention it as a just-in-case deal.