Need 1973? axle ID help

[SGTHohensee]

Once upon a time, my truck was wrecked. Originally it came with 3.42s in a 12 bolt, now it has 3.07s, and I think the whole shooting match has been swapped at some point. I’m just trying to figure out specifically what year this rear end is.

Markings are TAA W165 1 on the top of the axle tube. E153 cast on the pumpkin for what I’m guessing is a date code.

Gears are marked 14:43 GM 6 73 2-17

My guess is they pulled it out of a junkyard. I want to know if it’s 4wd or 2wd from the factory because it currently has a bent axle shaft. I want to know if they pulled the factory one out of the bent axle, or if it was bent prior. Or what.

Any ideas?