The clutch is hydraulic and is not adjustable.
It is self adjusting on a 89 Cherokee with a in line 6 4.0
yes
No
Not directly.Not directly.
from 89-95 yes.
Yes it has one.
YesYes
yes NO, The 89 uses a speedometer cable where the 92 is electronic.
They are 5.25"
I would start with the "Blue Book" value ( see link below ) and adjust from there by how the vehicle looks and runs.
Check the operating mechanism
It might be an exhaust leak