Just pulled my trans for freshen up after 140K of killer pulling miles. Called the best trans shop in texas (won't say who but are in san antone) for shipping instructions and they said Whooah pardo, , don't send it now cause we don't have any synchro's for the NV5600 and don't expect to see any until maybe end of September. Can this be true? The trans manufacturer failed to anticipate spares requirements in the future? So Far I have not been able to locate a set of synchros for this trans and guess I'll stuff it back in the hole and wait till september. If anyone out there has a set stuck in thier sock drawer, post it here on the DTR and you'll get load of responses. :-{}