The lever is the same. IIRC The 55 & 56 came straight out from the column with the flat steering wheel. The switch mechanism on the later assemblies puts the lever at an angle with the later dished steering wheels.

"Do not walk behind me, for I may not lead. Do not walk ahead of me, for I may not follow. Do not walk beside me either. Just leave me alone, you're starting to freak me out."

1957 GMC 150