I vote for dropping the engine and tranny together.  In my experience it
is a PITA to the get the motor and tranny mated during install if dropped
separately.  I use a motorcycle jack below the motor and a tranny jack for
the tranny.  This works super slick and can be easily done with one
person.  The only problem is I am too cheap to buy my own jacks.  Thanks
for lending them to me Scotty!

jake
82 AC Westy