Does Crank Stroke Affect External Balance

@toolmanmike I attached pic of the page. Take a look at the crank and dampner and he even explains in the description above to use these for external balance. Doesn't make sense to me since stroke is 4" not stock 360 3.58" stroke.
Interesting. Not a real engine he built though. A 4" stroke crank with lighter 273/318 connecting rods and no balance? I'm not buying it.