Output Shaft Tech, going from top to bottom:
- 1st shaft fits 62-64 727 push button
- 2nd shaft fits 1965 cable case 727s only
- 3rd shaft fits 66-75
- the last staft fits 76-93
NOTE: all 62-75 shafts use the same front planet splines (45*) the 76-93 shafts uses a 37.5* front planet spline and has a extra groove (see pointer in picture) near the slip yoke splines.