Show us your home made tools
A while back, I changed the 7-1/4 rear out for an 8-1/4 and installed a Powertrax locker, new bearings and seals and new pinion seal. To keep the pinion from turning while replacing the seal, I put a piece of thick wall pipe in one of the drive shaft u-joints and rested it on the leaf spring while loosening the pinion nut. Of course I marked the locations of the nut,housing and yoke so I could get it all lined back up properly. When I had the new seal in place, I simply moved the pipe to the other side to tighten to the required 225 ft. lbs. All my marks lined right up and I didn't have to fight with the pinion moving around.