Hey guys I just pulled the exhaust manifolds ('71 GTV - two pieces) and when putting them back want to use new nuts. What came off look like regular steel. I've had much trouble in past lives with exhaust manifold nuts and studs becoming one piece. Should I be using a different type of nut and/or is there a treatment for the studs that will prevent siezing? I'm thinking regular anti-seize won't last because of the temperatur, right?