A 2 1/2 to 3 ton jack under the front crossmember (behind the oil pan) with a 4x4 chunk of wood so you get 4" extra lift.
Then jack it up to max travel.
Place 2 appropriate height jack stands under frame rails (behind the curve).
Place jack under the tranny pan, raise slightly
remove flex disc and driveshaft
remove crossmember and mount bolts
get a stout cardboard box and place 2 smaller boces inside
place them underneath the tranny pan
remove all bellhousig bolts
remove tranny cooler lines
pry on bellhousing and push tranny back, it will fall on the boxes crumpling them, but will land softly.
pull put by tugging on cardboard
drink massive quantities of Belgian beer
1982 300SD (214 k, excellent shape) kidmobile running mostly biodiesel, gets 31 mpg hwy with 2.82 rear from a euro 500SEL
1976 115 body 240D 4-speed (traded for Jeep parts) - Engine lives on in my CJ7