all you do is remove the ngine oil pan. drain oil first of course. remove the rear main bearing cap. its a two piece seal so you pull the one half from the bearing cap. and push the other half out around the crank. clean everything up, do not damage the main bearings at any point. and reverse the install. add oil and a new filter, done.
oh, its that easy on a wrangler with a stick. life is more difficult when its a grand with an auto.