I had a '70 440 HP (I think that is the "F" code?) in the '69 convertible when I bought it, but it was a 4-speed. I don't recall any balance stuff on the flywheel? I think the flywheel and clutch assembly is still in a box around here. I sold the engine/trans to a guy doing a superbird clone.
The 505" stroked 440 in my car is the '69 "E" code engine.