4.56 vs 4.57

Garrett Ellison said
Well, the axle splines are a set dimension so more splines equals a larger diameter axle shaft. An 18 coarse spline hemi input is stronger than the 23 spline fine input because the 23 spline input is 1 inch and an 18 spline is 1-3/16.

ah so...

so if the 23 spline input shaft was 1 3/16 it would be stronger than the infamous 18 spline. cool. didnt know there was an input diameter difference.