Need Help - 68 Barracuda Ing Swith Removal

Hey Guys,
Need some help on how to remove the ignition switch from a 68 Barracuda. Assuming it's the same for a Dart... Looking to remove the entire switch unit to swap the "Key" assembly. Ignition and doors were keyed different when I bought the car, so I purchased a matching ignition and door lock set. Door replacement is fairly easy, but not sure how to remove ignition unit. Seems like I'm supposed to unscrew the front locking ring, but no good way to grab onto it. Below is a picture of the front and top view... Any tricks?