any year 727 should bolt to the 401 as the bolt pattern is the same on all 727's.
No
There are numerous bolt sizes used on the transmission.
Nope.
No.
A direct bolt in, no.
No. The bolt patterns are different.
the crankshaft sensor is behind the cylinder head on the top of the bell-housing (where the motor and transmission bolt together)
automatic with 6cylinder motor
nope
No
Transmission, yes Motor no, but it would be easier if it was out.
Go to postaljeep.net. They have rebuilt and new items for all postal jeep models-including engines. I am certain that you kind find your answer by calling and talking to them as if you where going to purchase a new motor ;)