http://www.jalopyjournal.com/forum/showthread.php?t=511913 here you go
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edseldude
FNG



Join Date: Nov 2010
Location: bedford va
Posts: 27
Re: 58 edsel rear end
The 59 edsel rear end is the same as a 57-58-59-ford fairlane as far as width and bolt pattern. I narrowed the original rear end in my 58 and used the same backing plates just redrilled the drums to 5 x 4.5. The 58 ranger and pacer have a very wide rear end. I imagine the 58 citation and corsair are even wider as they are built on the mercury frame.

the 9" axle is the old style

These are good years, but keep in mind 2 things. First, the housing have a weak spot where the tube goes into the center around the wells. The edsel drums are unique 11x2", so swap out backing plates and brakes from a full size car or truck. Also, case is weak like a war case, so if you're doing any spirited driving, use a later center section. Try to add a brace or stabilize bar or something to keep the axle tubes from flexing. All in all, a good reared, but a few flaws. We have one in our cougar.