340 Drivers side Exhaust Manifold Heat Stove

Good call @Mr. Sinister. It looks like I need a heater stove that attaches to the 2 holes on the bottom circled tabs and at the cylinder head with a special stud (which I have) on the third circled hole. I am not positive on this third hole. The part number on the manifold is 341862-1. Thank you again!

72 drivers side exhaust manifold marked 1.jpg