There is some debate over pulling or doing it in place. I've done more than I can remember. My helper has done many as well. We never pull them. He used to and then I showed him that driving the rear tires up on some drive on ramps or setting the rear axle on tallish jack stands so you can sit up under the rig is far easier, he no longer pulls them. No reason to fuck with vent, shifter linkage, or struggle with the two top nuts with exhaust and floor in the way.
Just way too easy to do them in place and you don't have to chase the case all over the bench trying to get the snap rings off and flip all different directions trying to get the oil pump to not be fucked up or get the chain lined up on the sprockets to get the rear half back on.