I've done this job and its nearly impossible to do with the ZF in place because of the two 13" long cross-bolts. Its actually more trouble to rig things to remove the bolts than it is to just jerk out the ZF. You can leave the bellhousing in place for what you need. And once you get the ZF out, you'll need some really big snap-ring pliers and keep track of the bearing shims in each side plate. If you mix them up, it changes the preload on the differential and you'll get howling. Info in pulling the transaxle is on www.realbig.com by Mike Daily.