quote Chinewalker:
I don’t see why the 1956 & up kit wouldn’t work for you. Most of Sierra’s stuff has that cut off, regardless of whether the items would work in earlier motors or not. I guess they had to pick a year to arbitrarily work with and that was it.
I agree. I’m slowly putting a gearcase together for my ’55 Big Twin and am using parts from ’54, ’55, and 60’s gearcases and the shaft sizes all seem the same.