55-64 chevy car and 1/2 ton truck "course" spline is what you will need.65 and later it gets crazy,but most were "fine" spline I will look when I get to my shop today--- I think I may have a GM part#.There should still be lots of those laying around states/side, but that may not be true in Germany. I know I have several--let me know if you need one. Paul
