Alright. The mystery rear is home. I believe what we have here is a 65-70 B body rear. With the 2.94 gears and left hand threads on the left side, I'm guessing 65-67. Center section is a 741 case, coarse spline pinion. Looks like it was laying in thw junkyard for 15 years before Joe took it home and put I side 10 years ago.
Perches are 44 on center, and I believe if I could get flange to flange, I'd be at 54.25.
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