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2020-01-10 - Miata rear differential gear ratios

I want to confirm I am reading this rule correctly.

4.7.8. Rear-end gear-ratios are open to all OEM differentials available for that year, make, and model or chassis generation (excluding specialty high-performance models not listed on the VPI table).

Does this allow us to run a 4.3 ratio in a 1997 Torsen differential since the NA generation had both a 4.1 and 4.3 ratio?
We are running a 97 driveshaft, stub shafts and half shafts.

I believe the 4.30 ratio was only available in the 1.6 NA and the 1.8 had 4.10 with the Torsen from 95 to 97. 
So you can run it.

Article Details

Article ID:
Date added:
2020-01-10 20:56:55
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