Ah crap, no good way to quote and edit.
Your answers are;
Yes
????
Yes BUT only Z31 turbo trans will work
No
Dunno bout' the 26 flywheel, but the others are fine
Not sure bout the 26' starter
That clutch scenario you laid out does NOT sound right to me.
Almost all nissan pilot bearings are the same
I don't remember.
No clue on push to pull conversion
z32 slave will NOT work on an rb25det bellhousing
You can use a z32 speed sensor, or just swap the plastic gear on the end to match your diff.
Happy thanksgiving lol..
Evan