What part/group number in the
Illustration are you talking about.
If it is the:
5.576
Retainer 37-54 passenger car & 1/2 ton truck. ARE ALL THE SAME.
Source 5.565
Collar 29-54 passenger car & 1/2, 3/4 ton truck. 4 bolt holes ARE ALL THE SAME.
except Powerglide & Hydramatic trans. 6 bolt holes
Source page 1 &
Source page 2 5.564
Ball 37-54 passenger car & 1/2 ton truck. ARE ALL THE SAME.
Source 
