[cobrajeff]

I have used two different steering wheels on my '57. I put a 1965 Mustang steering wheel on it several years ago. Straight bolt-on, but left a gap at the column where the base of the Mustang wheel was slightly smaller than the collar of the T'Bird column. I had trouble with the turn-signal cancellation sleeve, and may have not gotten it lines up properly.
More recently, I purchased the smaller diameter aftermarket T'Bird wheel. I don't think the splines are properly cut, as it was a difficult install - VERY hard to push the wheel home on the steering shaft. I ended up putting "anti-seize" compound on the shaft splines, and forced the wheel on 1/2 way using a hammer and a large impact socket to pound it on. Once half way on, I used a steering wheel puller to remove it, and then re-installed it (with anti-seize) and the hammer and socket. Not sure if it can ever come off again.