Chevy 12 bolt axle code I can't find

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HenleyTX

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Joined
Aug 1, 2024
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Location
Conroe, TX
First Name
Brett
Truck Year
1985
Truck Model
1500
Engine Size
4.3
Bought a 12 Bolt rear end. I believe it's a 1976 Chevy. I can not find the axle code anywhere online. It's KDU W033 2.

Edit: I found the KDU part. 1974-1978 12 Bolt 3.40 gear non locking. Not sure what the W means or the 2.
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