I know A bodies site but.....
What do you think a complete 68-70 Body 8 3/4 would cost? Would be to make the 69 Roadrunner a roller. I have 2 8.8 diffs that I could take but an 8 3/4 would be drop in and go.
On the Mopar classifieds group I moderate for on Facebook, they’ve been going anywhere from 250 for the bare housings and axles up to about 8-9 hundred, BUT the higher priced ones usually have clutch sure grips.
Or you could do what I did, pull a part yes Dana 60 from under a truck, that cost me 150. Had 4.10 gears but was an open carrier, bought a track lock for it for a smoking deal, axles were 300 from dr diff, plus 100 for the Mopar car ends, 150 to cut it down.
for about 700 To 900 bucks total, you could have a well built, near bullet proof dana 60.
I was gonna have to spend nearly that much on my 8.75 anyway Since I needed axles, new car ends and it cut down, so i sold my 8.75 and have just under 200 out of pocket in my dana 60.