this is late 80's 8.8 ford rearend, it is super nice and perfect backlash, just right. 3.55 as the tag clearly indicates . problem is, my project needs a much narrower 56-58 drum to drum. this unit is 62 " inches so i cant use it.. GGGrrr. so i am going to try to sell this to get a nice used 8.0 for my project. i dont list garbage, like all Hambers we should look out for each other... i can send my phone # if you like to ask questions.. oh sorry, it has 1 stud each side torched off to dismount wheels. nice finned drums and 2.25 at least brakes.