401 Stick Flywheel ID

How can I ID one of these? Anyone have a pic that shows the specifics? Here is the flywheel from my '60 LeSabre with a 364 nailhead. Is the 401 unit "stepped" (disc and pressure plate are recessed below the outside surface) like mine in the pic? And what's the balance difference?

Thanks Steve

 

Here we go.....

 

All 57-63 flywheels are th same and interchangeable.

 

4 toe,

True. But I need a pic of a 401 flywheel so I can ID it if come across one. I'm told the balancing is different from my 364 unit.

Steve weim55 Colorado

 

I've got one from my 425-
I'll see if I can get a picture.

 

I'll post pic tomorrow,

 

Great Ted. Thanks. Do you know if the 401 425 Flywheels are balanced different?