wvumtnbkr Posted April 27, 2017 Report Share Posted April 27, 2017 I am thinking about swapping the rear diff on my RX7 to get a better gear ratio. Right now, it is a 4.10 gear. I was thinking something like a 3.73 would be much better. The rear of the car is IRS. I know there are a few kits out there to use a ford 8.8. I was wondering what other diff might be usable. I need the diff to be strong, light weight, have good choice in ratios, cheapish, easy to find. Gotta work with the stock RX7 suspension. Do the BMW diffs work well? Quote Link to comment Share on other sites More sharing options...
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