Quote:
Originally Posted by fooddude
I thought I read somewhere that only JDM IS300's have the 4.56 in certain models and none of the USDM IS300s had 4.56; hence, you won't find any 4.56 pumpkins in american junkyards. I could be wrong though or may have thought incorrectly.
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I don't know anything about the JDM IS (Altezza) models having a 4.56 from the factory. What I DO know is that the 4.56 ring and pinion pair was used in a JDM-only model of the Supra, the GA70. Thing is though that the carrier assembly from one of those won't work on an 86; you'd be looking at installing those gears in your existing carrier.
As it stands, I don't know of any carrier that has a 4.56 pre-installed that will just drop into an 86.