I'm a little confused. I thought any NSX from 91-93 may be in the snap ring failure range? But on the Faq, it says it's only within 91-92. Which is true?
The transmissions in the failure range were not necessarily installed in the cars in consecutive sequence. Thus you can have some '92 cars that might have a transmission that is not in the failure range, and a '93 car that is in the failure range, or vice versa. The only way to tell for sure is to look at the transmission's serial number, as described in the FAQ.