Newly married, 1 yr old kid, just bought a house... and the diff bearings in the wife's car goes CRUNCH... and she NEEDS the car.
So according to all my friends, the manual AND Autodata: the motor and trans have to come out... but you know me... I'm smarter than the average bear, I can do it inframe.
Out to the garage, put the thing on stands, get out a couple of bottle jacks and get the motor twisted far enough I can get the diff apart (to get the diff apart, I have to take most of the transmission apart).
Got it back together... figuring out the 14 ball bearing valves in the valve body was fun, and started the car on stands. It goes through the gears, goes into reverse and still holds pressure... BEAUTY!!!
Slap the wheels on it and go for a test drive, get about a mile down the road and when starting off from a traffic light the thing starts with CRUNCHA CRUNCHA WUGGA WUGGA... WTF????
I dashed to buddy's shop (it was closer than home) and wheel it into the shop, onto the hoist. I tell him that I just rebuilt the diff/trans and ask him to take a look at it.
I DIDN'T TIGHTEN THE WHEEL LUGS, all 20 of them. The cruncha wugga was the wheels flopping around.
So instead of being known as the genius that can do a FWD Chysler diff inframe, I'm the idiot that doesn't know the wheel lugs should be at least SNUG.
35 years later I still get razzed about that.