replacement trans has been repaired already- it too had a bad diff pin at one time-the case has been epoxied where the diff pin wore a hole thru the case.
knowing nothing about the history of this spare transmission, my son and i took it apart- the case has been repaire on both sides, where the diff pin did its damage- its not structural, but it just doesnt look good. i may have a good half case somewhere....
the diff pin and gears look like new. no noticeable wear on the spider gears-like none- so maybe someone installed a new diff into this trans. or at least gears and a pin.
looking into a phantom grip- its already apart, so why not?
currently installing a n/a 5spd into the car- this one i know shifts good, it was in the car when it was a n/a car-so the car will be drivable, and the turbo trans will sit on the bench until parts arrive- i did notice a rough feeling bearing on the carrier, and might as well replace the shift shaft seal / bellows and the input shaft seal while the case is apart.
the syncros look really good, if not new, from this turbo transmission-the teeth are sharp, like little dog houses, and the matching gears have no noticeable wear-the lines are still there inside the 5th syncro, like new....so, maybe someone did rebuild this unit? i have no clue, as i bought this engine/trans from the pic n pull in calgary a few years ago....the joys of junkyard parts...!!!
and its currently -30* CANADIAN - at least the car is inside a heated area....