Torque Converters for Internally Balanced vs Externally Balanced Small Blocks

We should hand this thread over to @stillrunners so he can get some help.

To update the followers, my engine shaking ended up being my timing was way too advanced. This is a new build, so I have a ton of variables... anyway, I had no pinging or sound of the starter grabbing, but yeah..... too advanced. Now.... I still have a drivetrain vibration, but that's another thread.