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Old 05-30-2012, 01:36 PM   #9
smbrm
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3.727 would have been a much better compromise for the manual for street use. 4.1 appears to have been selected more for the track than the street.

With the 4.1, on the manual I believe you will be doing a lot of shifting in city driving in the 1-4 gears, while on the AT I believe you will be doing more shifting between 4-6 on the highway.

How big of an investment is an IS250 diff?
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