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3.9 rear diff options?

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Old 01-07-2013, 07:55 PM
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3.9 rear diff options?
Does 3.9 miata rear diff fit our rx8 diff box? Other than auto rx7 FD 3.9 rear diff, what other options do we have to lower gear ratio and be as strong or stronger? I don't want to change the entire rear diff... trying to keep things simple for once thanks all!
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Old 01-07-2013, 08:09 PM
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Old 01-07-2013, 09:06 PM
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Miata no, LSDs and R&Ps are interchangeable between the FD and RX8
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Old 01-07-2013, 09:14 PM
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thanks team. erg, those auto rx7 FD's are hard to find.
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Old 01-07-2013, 09:41 PM
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One for sale here...

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Old 01-08-2013, 06:31 AM
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Depending on your finances and time, might be best just to buy the ring and pinion set.

Mazdatrix RX8 Differential Parts
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Old 01-08-2013, 07:12 AM
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thanks for the link!
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