If you're the one doing the replacement, don't get discouraged at access to the fittings (its a bear). PB blaster or Kanokroil before you start, maybe drop an axle or move exhaust. When reinstaling, leave the mounts loose so that you can line up and start the hydraulic fitting threads. A positive attitude helps pass the time while you fiddle with them
. I had to walk away from it as they didn't want to start after numerous attempts. All ended well.