I was with you until the last statement....?
If using a set of factory shafts, ie long and short sides, doesnt' make a "full width" axle, then how does using 2 short side shafts with a centered diff make a viable "full width" axle.
I cant see that a 14bolt diff and Rockwell diff are that much different in width, so how would using stock rockwell shafts not make a "full width" axle with an offset diff?
I could see it if you were buildng a Passenger side drop axle, because of the pinion offset of a 14bolt diff? But a driverside diff shouldnt be much worse than a 79 HP60