there is. think someone was making them from this site also...
3467186 - 1970-76 Dodge/Plymouth; Mounting Hub; For Tuff Wheel or Rim Blow Steering Wheel
1970-1974 Tuff wheel steering wheel adapter.
Steering Wheel Hub 1970-74 A/B-Body Tuff Wheel, Steering Wheels, 115-SWA101 Reproduction, NOS...