4 Speed Reinstall From Underneath

Well, I used to be young and strong. I could pick up a 440 block, too. But those days are long gone. (I'm 73 now.)
I had a 63 Econoline van. The rear main seal leaked bad so I changed out the clutch often.
I used to unbolt it and laying on my back lift it out with my knees and then lower it down to ground level.

I was younger then too!