8 3/4 rear end confusion

This is what the complete set up looks like

IMG_6455.jpeg

You can get another one from DoctorDiff
"Powr-lok" Thrust Buttons

Looks like your pictures show both halves and the roll pin so you probably have most of it anyway.

Also, going back to your earlier reply, the driveshaft should turn in both directions with the transmission in neutral, not just one.

Stick the pin in the button. Put it on your magnet nicely centered and pop it back in the hole.. swipe sideways and install axle.

The magnet is good for getting things in place but since pretty much all of them are telescoping he’ll probably need a broomstick(s) or similar to get the other half seated all the way onto the roll pin. I like that method vs using the axle to finish it just because the axle is heavy and you get better feel with something lighter