think its hard enough/expensive to get short ratios for the large case diffs. think a 3.62 would be the handiest out of e46 m3, or you could always try and get a 4.10 bmw motorsport cwp for a few grand.
edit
turner motorsport do the 4.10s for a little over $1000 delivered.
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Thread: M3 diff ratio question
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25-09-12, 21:58 #2di Member
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Last edited by kev.skyline; 25-09-12 at 22:01.
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