You need one of these... It's the steering column adapter to put a rimblow, Tuff Wheel, E-body standard woodgrain or 72-74 E-body 2-spoke wheel on. It was used on 70-71 A and B-bodies and anything a Tuff Wheel was on. They are a couple inches shorter than the ribbed version you have. The downside is some people don't like the steering wheel so close to the dash. Let me know if you need, I have a few left.
Dave