That chart sucks and should be burned at the internet stake. B 8.75 rears are NOT the same from 62-70... LOL

A 55" (54 15/16) flange to flange housing is going to be a 68-70 B rear.
https://board.moparts.org/ubbthreads/ubbthreads.php/topics/53762/dana-60-width.html#Post53762


The 8.75 lengths cross over to the Danas for each axle.
http://www.moparts.org/Tech/Archive/axle/16.html