It's hard to measure 120 degrees while lying under the car on jackstands. I used my HF 1/2" torque wrench as a ratchet. Spin your ratchet 180 degrees and count how many clicks it takes. Then mult by 2/3. You can then tighten the bolts that number of clicks but not necessarily at the same time. You can swing the ratchet fewer clicks counting up how far back you drop the ratchet.

You also should have some "LONG" Allen sockets to remove and later torque the Allen bolts that connect the stub axles to the tranny.

If you freeze the bearing, and use a heat gun on the tube 2-3 min on high, the bearing slips in without hard pounding. Then just make sure its fully seated before installing clip.