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<all, E28?> Diff Ratio Swap?



Has anyone changed the stock diff ratio in either an E28  533 or 535 to the
E30 325is (3.25 to 3.73)  By my calculations it should make the car very quick
and still "hopefully" pull about 125-130 mph.  Has anyone else done this and
has any comments, good or bad?  I have the chance to buy the 325 diff real
cheap, and I want to do this to make my car quicker.  Thanks ahead of time!

Nathan
85 535i

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