I have a 12 bolt in a 58 Chevy pickup that I'm restoring and I'm wanting to go to a 9". I was told it was out of a 68 camaro. The casting date is h138. The numbers on the axle tube is CC BS 0829G1. If I read on here right, it's a 68 housing and it has 3.31 gears. I was thinking of selling it but I'm not sure what it is worth. I was hoping a camaro guy could use it. Thanks for the help.