Marine 360?

Also with marine engine look for major rust in cooling jackets. If it was raw water cooled salt or plain water (lake water) was run and eats the jackets away from the inside. Just a heads up. All the boats I’ve stripped for Mopar engines (they were popular on the 70’s) the Reverse rotation engine cranks some were different and a few were same as stock rotation. You had to run number to figure it out. All the high end boats I dug thru to get the engines, had different cranks. The cheaper brand boats had standard rotation cranks. Possibly due to balance was smoother at 2800 rpm - cruise on plane speed. Not high rpm at all.