A stud will provide more consistent torque load on the head and a bolt will stretch way before a stud will of the same grade. But if u wanna use bolt go for it. This to me falls into the catagory of copper gaskets, 10mm head studs, copper silicone, and all the other things ive heard ppl talk about pertaining to heads over the years. If thats how u want to assemble your engine i say go for it. Ill stick with my stock studs and o-ringed head.