I know about the input shaft, I got non lock up >78 input shafts but missing the non lock up reaction shaft supports (were scored too bad, I did throw them away!)

Here a picture.. I just wanted to be sure it's only the ball and not some inside passage that I might not have think about...

On the 74-77 thanks, then I will just drill that hole! I got a few 74-77 supports but none 71-73...