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open up the sc430 carrier assembly. Check to make sure the ring gear has the same 10 bolt pattern. If it does, then you can. I would assume you can put it in either assembly, since the 00 gs400 carrier is the same size as the auto tt carrier.
 

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I have no experience of any kind with SC430's. Let us know what happens, it'd be good info to add to the differential sticky if it turns out that it works.
 

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The sc430 3.266 diff works! I took my lsd out of my factory auto TT 3.7 rear and went right in the 3.266.
Did the SC430 pumpkin/carrier bolt up into your Supra's subframe?
 

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So. We just tried this and a Torsen LSD from a TT Auto does not fit in a 2005 SC430 3.266 Open Differential and the axel flange is too small as well.
@Egoguy, what year sc430 did you get the diff out of?



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Okay, so this is from a 6spd 🤦‍♂️🤦‍♂️🤦‍♂️🤦‍♂️🤦‍♂️ and not auto. Any suggestions, or source a TT Torsen?
 
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