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I have a Toyota OEM 4.3 final gear (10% shorter then the stock 3.9) sitting at home for the past 18 months if not longer..

I am finally planning to install this.. The external dimension of the gear is 8 inches and the internal diameter (where the LSD slips into) is 4.9" Does anybody know if the OEM 3.9 gear share this same dimension?? Any help will be greatly appreciated..

Secondly, what is the TRD LSD part number for our car. I have reason to believe that it is 41301-JX001 for the 8" diff.. the 41301-SE100 is for the smaller 4 cylinder ALTEZZA with a 7.5" Diff.. Carson Toyota states SE100 is the correct one but mvpmotorsports on the web states the JX001 is the correct one.. If anybody have done this and knows, please help!!
 
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