they probably also have different gear ratio. change the brakes... but why would you want to do that?
2.73s vs 3.27's. you would rather have the later year's rear end. Or better yet find a cobra take off, they have 3.55's
well i have the chance to buy a 3.73 posi rear end out of a fox body and i want to know what will have to be done to bolt it in my car
It will bolt in, the only thing you may need is a set of wheel spacers for it. Fox body rear ends area inch or two shorter.
one other thing is the axle shafts, 91's are 4 lug.
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