Dana 60 vs Ford 9"

straddle means the pinion has a support stud and bearing on the end of pinion gear (3 bearings total)
overhung just has two bearing, and no support stud/bearing
obvious the straddle is way strong and better and preventing pinion/crown deflection

i really like the fact that the 9" is dropout because it makes ratio changes that much easier and rebuilds can be done on the bench. Not laying on your back side.