Correction, I did find the fluid type recommended. GL-5 SAE 75W-90 Synthetic.
But I still don't know how much is needed.
I went to the mag-hytek ( I don't have a mag-hytek cover, just thinking about it) web site and using their info I found that I have and 11. 5 inch rear end.
PS. If you happen to know how much fluid you need for the Auto Trans (48RE)
I need that too.