I don't see where the wheels in the first two pics look anything like Radar or Radir Wheels. They look more like the Keystones in RO51's and Pink's posts.
A friend on mine's older brother had a set of these Keystones on his 327/350, 4spd, '66 Chevy Deuce SS. I never had seen another set till this thread. The set I saw didn't have a dome cap, they had a flat cap the made the wheel look like it didn't have a center hole, the green Chevelle in the second pic appears to have the same type cap.