Identifying a 12 bolt rear end

[54belair]

With my recent purchase of a 68 project came a complete (but unassembled) 12 bolt posi rear end.

The only info I can get about the rear is that it was changed out because the posi unit "kept going out"

I have found both casting no.s and stamped numbers that are in the pass. side web or on the pass side tube. So far I havent been able to id the numbers.

If anyone can help---Id sure be appreciative!

Cast numbers are (in web) NF 3896838
stamped numbers are: HA 06 05 W 2
the stamped numbers are widely spaced in the order im showing

NUMBERS in the carrier are 326663 ngm51 c3

Ive looked for a data base that might show what the housing and center cection is from but havent had any luck so far.


Thanks for any help