Never in my life would I have thought it would come to this

I'll make every one of you sick.

I went to R+R salvage in Aurora, MO a few years ago, right before they closed.
They had a BIG dumpster full of 8 3/4 housings, each with the ends torched off. I asked about it and they were selling the pumpkins for, iirc rollercoaster drives. They wanted the easiest way to get the pumpkins out and the rest went to scrap. It would have been narrowed - axle paradise.

Ill give anyone here 600 bucks plus pay the freight for a 8 3/4 ( A-Body ) thats not junk but its gotta be a limited slip and not the style that cant be rebuilt

Not being negative here, but the reason you're having problems is two fold.

It's not the '80's, 90's, or even '00's anymore and....
You want your cake and to eat it too.

How soon do you want this rear? How many clutch sure grip chucks do you see for sale, period? When I first saw this I thought, "Yeah, How about gold plated, too?"

Good fast or cheap, pick two. If you got time, keep looking, it's out there. if you want to pay someone else to find the deals for you, it won't be a deal by the time you pay them. If you want brand X because your in a hurry and are cheap (My personal opinion is being held back), then you ruled out good, and there are other expenses too that.

What exactly do you want this rear for, anyway? THAT Will have more bearing on getting what you need quickly that ANYTHING else. But if want the best right effin' now, you're going to pay.