I was just reviewing Ray Hutton's book (300zx The Enthusiast's Companion). In the specifications he lists for the TT the final drive ratio of 4.083 for the US and 3.69 for Europe. This might mean that they intended to use the N/A gear ratio for the TT in the US. Or could just be a mistake. I'll check my other Z32 books and see what they say.
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