5 -6 Speed conversion in a 1991 NSX

[Bense]

Since there is no taller gear available this would be a custom gear, with a custom price$$$$$$$$$$$$$$$$$$$$$$$

To the original poster, the 4.55 will make your original concern worse (higher revs at all speeds)

Regards,
LarryB

Regard,
LarryB

*sigh

 

[NSXGB]

Also required to complete the conversion is the clutch cover plater part number 21350-PR7-010 as is slightly different to the 5 speed cover plate. Not essential but closes off the gaps in the bottom of the gearbox casing as intended.