How do I find an 8 3/4 rear in the jy

Shhh, you’re giving away my secret of finding Suregrip 8 3/4” 3:55’s and 4:10’s in old 4WD Dodge trucks from the mid 70’s. Next thing you know you’ll be telling them to check the C bodies too, especially the 68-70’s, for those 742 case Suregrip’s with 2:94’s that go for cheap.
And we usually paid $50 bucks for them. LOL!

Back in the day a friend of mine mentioned a truck in the junkyard having a 8-3/4 but it wasn’t a suregrip so he passed on it. I checked it out and it was a 3.55 and the best thing was that the bed was missing so I didn’t need to crawl under it to remove it.