I have a BE coded 12 bolt rear that I bought from a reputable seller that is liquidating his collection after over 30 years. The story of this rear is that it was bought at a swap meet in Englishtown, NJ about 12-13 years ago and stored since. He had intentions to use it but never did put it to use. He knew exactly what a BE coded rear was so he did not give it away. I also viewed a massive collection of big block treasures and other great period parts that he had in his collection. The original COPO HD internals are no longer in the rear as it is now running a 5:13 gear set.
Here is the pic of the stamp - I had Eric look at it and he said it is questionable without very close and forensic inspection. What are your opinions?
BTW - if you do need this rear to complete your COPO or ZL1 project let me know as the car I was planning to use it for has sold and I no longer have the specific need for it.