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  1. 8.8 Rear End swap spring perches

    Classic Cougar Tech
    Hey guys, i'm putting a 8.8 rear end from a Foxbody Mustang into a 68 Cougar. I've done the swap before on a 66 Mustang and everything went well as far as setting pinion angle and centering it. The only thing I can't remember is the size of the spring perches I'm supposed to buy to weld onto...
  2. What size is my rear end?

    Classic Cougar Tech
    So I searched but was unable to find a definitive answer. I have a 1970 cougar xr7 302 and want to upgrade the rear end with a limited slip or traction locking differential. My question is, what size is the rear end in my car? and what is the difference between a 28 spline and a 31, and which do...
  3. 1965 thunderbird rear end...is it a 9 inch

    Classic Cougar Tech
    I found what i think is a 9inch rear end in the pick a part today but I can't remember the identifying difference is between the 8inchand the 9inch rear ends. I was told that if you can get to the bottom bolts of the third member with a socket, its and 8 inch, and if you need to use a wrench...
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