Quicker ratio, stronger assembly, bolts right in place of a TJ box. Pitman arm faces rear.
"The Durango box is not stronger per say but does have a larger piston . The turning is different too . The ZJ/waggy box is 3-3/8 , the Durango box is 2-15/16 "
Meh, like you said, what you have works, why mess with it