What the heck is up with 8-3/4" rearends?

I got my 8 3/4 housing bare for $100, I found a 3.91 coner SG pig out of a 69 A100 Van at pick-a-part, I hid it in a Ford van until 1/2 price day came around the following weekend because I knew no one would be looking in there :-) Axles were $50 used at a small swap meet. forgot where I got the 10 brakes..If I were to do it again, I would just do an 8.8 with 2 short side axles.

Thank you, another reason for me to look into one, 8.8 are everywhere it seems :coffee2: