I probably do 2-3 5.7 broken exhaust studs a week.... if your lucky it snaps near the top instead of even with the head. I’ve been using a step drill bit to hog out the holes on the sealing side of the manifold on the end ports. I also put a generous bead of copper rtv around the end ports on the gasket. Knock on wood I haven’t had a comeback doing it this way.