Trans is crazy looking to especially at the end part got a bolt pattern around the end of tailshaft.
One other thing the 216 has a metal tag rivete above the fuel pump with 040 020 020 stamped on it. Maybe machine work stamping?
Indeed. The tail shaft is designed to mate with an enclosed (torque tube) drive line. There is a ball housing that attaches to those 4 bolts. It encloses the single universal joint in the system. The ball holds about a pint of gear box oil.
Old Car Manuals Project - 29-54 Parts Master Catalog You are likely right about that metal tag. Probably 40 over in the cylinders and 20 over on the mains and the rods.
