If anyone has access to a chevy small-block driver's-side head out of the truck or stripped of the power steering pump bracket I really need your help! Q: How deep is the threaded hole in the head casting for the power steering pump bracket pivot bolt? (not the bracket part near the exhaust manifold but the one by the water pump). On my truck this is the hole closest to the head gasket surface and towards the passenger side, quite close to the driver's side water pump bolt. It's a 3/8 NC16 hole. The reason I ask is that I'm removing a broken bolt and remnants of an EZout from this hole with a dremel grinding bit and it would really help to know how deep to go. Thanks!