Hello everyone! I'm in the process of getting my '54 road worthy which that includes swapping the original Eaton H052 4.57 ratio rear end with something that includes taller gears for easier highway speeds. I was able to locate a Chrysler 9 1/4 rear end with 3.55 ratio gears out of a 1989 Dodge 250 pick-up that seems to fit the bill as it as a wheel mounting surface measurement of 65" (1.75" wider than the 63.25" Eaton HO52). I've been researching here and elsewhere to find the best rear end option for my 3600 and haven't ran across anyone using the Chrysler 9 1/4 . Is there something I'm missing that wouldn't make this rear end a good option for my 3600?