>I can confirm that Series V transmissions came with 10 spline first, and
>then later changed to fine spline. However, I was once specifically told
>by someone who I figured would know that all all-sychro OD's had fine
>spline in front and 10 spline in back. I wonder if he was wrong, or your
>transmission had a changed first motion shaft.
>
>
Per Sunbeam Specialties' catalog:
Page 8, Clutches
10 spline (up to B395017308)
25 spline (from B395017309)
Dick Sanders Seattle