I have a stock rear end I pulled out of my 56 ford customline, and I am thinking about putting it under my wife's 64 falcon. I had assumed it was an 8 inch, cuz it is a smaller version (diameter of carrier) than my 9 inch. I called richmond gear, and they tell me 8 inch gears came about in the 60's. I want to use this rear end because it is the right size, and will bolt in. I just want to be able to rebuild it. thanks