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Discussion Starter · #1 ·
Hello all so I got a 12 bolt for my car found the number but can't find any information on the code that's stamped on the tube can anyone help me with this?? It's stamped DD 1210 B I paid 400 for it complete drum to drum I was told it's a posi unit but have not been able to inspect it myself yet had my dad pick it up for me.
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If the Rear is from a Full Size Chevy car from '65-'69, it is a Non-Posi with 3.31 Gears. What is the Date Code on it and also, what do you plan to put it in?
 

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Discussion Starter · #3 ·
I'm probably gonna clean it up and put a 3.55 posi in it put disk brakes on it for my 1970 impala. I recently put a big block in my car and never really intended to so I wanted to upgrade the 10 bolt
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