Go ahead and look, but that particular third member is about as scarce as a chicken with lips! It was only used in certain 3/4 ton vehicles with an automatic transmission. The entire center section, not just the ring & pinion, will interchange. You'll be looking for an H0-72 rear end, I believe.

When I ran a dirt track racer in California, we scavenged up every 4.10 3/4 ton rear end we could find- - - -it worked very well on 1/4 mile tracks behind a Muncie 4 speed in 2nd. gear.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!