I have a 1948 3/4 that I want to change the differential to a gear ratio that will give me more speed. I found one for sale. I think I have decoded the markings to mean it is a 3.36 ratio from a car.
will this differential bolt in to the rear-end of my 48?

http://s62.photobucket.com/user/DesertTruck/media/100_1222_zps8032848d.jpg.html

http://s62.photobucket.com/user/DesertTruck/media/100_1223_zps2f9ab351.jpg.html