340 Flywheel

Is your 340 neutral balanced, or external?
I have a couple of neutral balanced small block flywheels, they are factory instead of messing with the slant stuff.
As far as I know this 340 is neutral balanced. Maybe your right, I should just use an 11 inch neutral balance flywheel and never think about it again. If I have an issue later one down the road then I might have a can of worms to deal with.