My parts are starting to trickle in to do valley pan gasket, knock sensor seals, knock sensors and of course intake manifold gaskets on our '05 Tahoe. After much reading and research, I guess its common to disconnect the coolant crossover pipe and re seal them? I'm seeing these (link below). I guess these basically get sandwiched between the steam pipe connection (which already has a seal in it) and the mating surface? Do these work well? And does anyone know the torque specs on the bolts to crossover pipe?