David , I recently had my heads rebuilt and they told me to have the head planed and the exhaust manifold planed and to go without a gasket at all . They said gaskets will fail wherever there is not a smooth mated surface . It worked great , you mate them up and torque them down to specs . No need to rertorque as the surfaces are smooth . If you have any questions just call me at 763-807-0540 . Wayne Miller , Judy says Hi .