An accurate 8 3/4" rear axle width list

Thanks for the reply:
I saw that the 8 3/4 listed here had various lengths, unfortunately my year and body type were t included. Question, are all the 8 3/4 axels for A Bodies the same length?
Also, my car came with a 904 for /6 if Infind a sb 904, do I have to change the drive shaft?
Thank You

All A-body 8 3/4’s are the same width. And /6 904’s and small block 904’s are the same length. So the length of the driveshaft still has to change going to the 8 3/4.