https://portland.craigslist.org/nco/pts/d/netarts-pontiac-lemans-gto-10-bolt-and/7273408268.html Up for sale is a Complete 10 Bolt Pontiac rear end out of a 67-69. Will fit 64-72 GM A Bodies. Also 69-72 Monte Carlo, Grand Prixs. Comes with the F41 Rear Sway Bar and Lower Boxed Arms Option. Rear End is a WB Code 256 Non Posi. Ad a Posi Unit and have Yourself a nice rear end! Located in Tillamook Oregon. No Shipping. $300
I had one of these in the 71 White Gs I just sold . It had a 355 posi in it and I was told it was a decent rear. Never has any problems with it. It even looked a lot like a Buick early 10 bolt.
In my estimation, if it's an 8.2 NO. 8.2 Rear non posi with those gears are not in demand. Any value would be in the sway bar, boxed control arms.