Originally Posted by NITROUSN
What crank is in your car now? Cast or forged? What converter did you order?


Sorry did not mention that specifically...

The weighted converter implies that it is a cast crank 440 but a lot can happen over 47 years...
It is still a cast crank with large damper and the original converter had the weights.

Before the replacement the vibration was not present.

The replacement was a reman from a local gear and drivetrain shop. "Precision" brand, which they sell a ton of.
It is the correct one for the application based on the part number and also visual comparison of old and new.