Have you ever seen KB block head studs? They are made the same for the new blocks. If you think about it, its the perfect stud installation. It locates the stud perfectly centered. And being in aluminum gives maximum thread engagement. Which is very critical. Have seen several engine builders strip the threads out of a head by not checking for max thd engagment. So with special machined stud ends and full thd usage. Should solve all problems. Not trying to be a smart ass, just trying to help and share years of experience. One last thing, make sure you get studs with plenty of thread. In cast aluminum you need all the thread depth you can get.