Be sure to mark where the driveshaft is bolted to the flange so it stays in balance! then you will need a 12 point wrench to get it off, unless you have a wobble extension or swivel and can use a 12 point socket. Most of the time you will need to tap it a little or use a small chisel to wedge it off, be sure to leave to bolts in but loose so the driveshaft doesn't come flying off and smack you in the head! Jack the back wheels off the ground a little and engage and disengage to parking brake to be able to spin it and stop it so you can reach the bolts easier