8 3/4 Diff strengths?

That whole pinion thing is BS.

Run what you have if it's working and the ratio you want.

Guess which pinion doesn't have a stress riser in it...

Here is a better source for 8.75 info
Pinion Comparison - Quality Body Shop Drivetrain

Yeah...the pinion diameter at the splines is all the same, for all 3 units, as they are interchangable (spline count not withstanding),,,,so....which one is REALLY stronger??????