383 440 swap. Same flywheel?

Email sent. Appreciate any other imput from someone that has bought one.
This is like so many things MOPAR.
You know what you need, but who do you order it from to be sure and get the right thing?
Another example.
I'm going to use Polygraphite on the front end.
I've had good luck with it.
A gazillion miles and counting on one car.
If my memory is correct, PST is infamous for sending the wrong strut rod size bushings.
But that my not be their fault.
It's Chrysler and who knows what might actually be on a car?