In using the metal plates for the center "exhaust crossover ports" for heating intake under carb", how are the metal tabs installed?
These plates are flat on one side, and have 2 tabs that rise at 12 & 6 o'clock at the center of the holes in the metal plate.
Do the tabs go down or up into the heads?
Are they placed on top or below the gasket?
Do the tabs need any sealant/rtv, or just lay them down?