383 440 swap. Same flywheel?

Just a follow up on this old thread.
This will work and save going into the engine.
Did for me anyway.
I've been busy with body work and other things.
I finally got the engine in the car.
The engine is smooth as silk.
Rather than risk a machine shop, I called Brewer's Performance and bought a flywheel.
My theory was they would know exactly how to balance a MOPAR flywheel.
People do it all the time with torque converters I think.
Why would a flywheel be any different? It is just a matter of being sure to get someone that knows what to do.
So for the price of an externally balanced flywheel I've got a good set up.
The transmission shaft had been shorted just a little anyway and I used a red "glyptal" type sealant in the hole with a register bearing.