I'm swaping in my 12bolt this weekend, already got the seal for the yoke swap but what I need to know is which methods are ok? Got the nut & yoke off the 10 bolt with a 3/8 ratchet (GULP), but I need to revove the 12bolts now. I remember something about using or not using a impact and damage to ring and pinion. I also need to replace the crush collar, right? Thanks guys, need the help!